Showing posts with label Useful Info. Show all posts
Showing posts with label Useful Info. Show all posts

Thursday, September 22, 2011

WHAT IS IN WINDOWS 7 OS....?

Microsoft's new OS isn't perfect, but it is what Windows Vista should have been. Here's a hands-on look at the version that's beginning to hit PCs.

For most people who are considering moving to Windows 7, October 22 is D-Day. On that date Microsoft's newest operating system lands on store shelves, both as a shrinkwrapped upgrade and preinstalled on new PCs. For some folks, though, D-Day has already arrived. Microsoft has issued the final RTM (release to manufacturing) version of Windows 7 to large companies that buy Windows via volume licenses, as well as to IT pros who belong to its Technet service. The Windows Vista era is officially drawing to a close--although you could argue that it never really quite started--and the Windows 7 one is under way.


And that promises to be a good thing, whether you're a satisfied Vista user, a disgruntled one, or a Windows XP holdout who has been waiting for something better. Windows 7 feels like an anti-Vista: Unlike that OS, for instance, it doesn't try to dazzle you with flashy new visual effects. With the removal of Vista applications such as Photo Gallery and Movie Maker, Win 7 actually does fewer things than Vista did. Even its unprepossessing name is a change from the epic-sounding monikers that began with the unfortunate Windows Millennium Edition.

But Windows 7's lack of glitz is a huge part of its appeal. Unlike the increasingly chaotic and annoying Microsoft OSs that preceded it, Windows 7 is designed to stay out of your way so that you can get stuff done. It smartly addresses Windows annoyances both new (User Account Control) and old (the system tray). And the final version I've been using seems to realize the promise of the rough drafts we started testing last October.

Windows 7 isn't without its warts, but I haven't been so impressed by a new Microsoft operating system since Windows 2000 debuted close to a decade ago. Here's a quick look at some of its best features, a few drawbacks, and areas where reserving judgment makes sense. (Much more PC World coverage is on its way, including an in-depth review with speed benchmarks, upgrade tips, and Windows 7 system reviews.)


The Good...

The OS is less piggish: One of the many regrettable things about the initial version of Windows Vista was that its signature feature--the splashy Aero environment--was too much of a resource hog to run well on many early-2007 PCs (even those that had been promoted as Vista-capable). The PC World Test Center hasn't benchmarked the shipping version of Windows 7 yet--stay tuned--but all signs point to this OS being sprightly enough to perform decently on all current systems, including those allegedly underpowered, pint-size machines known as netbooks.

The taskbar has been reinvented: It's amazing how little the taskbar and its system tray have changed since Windows 95. In Windows 7, they both undergo sweeping, long-overdue makeovers. For the most part, the results are extremely pleasing.

The new taskbar's default style does away with text labels and relies solely on program icons, therefore making better use of screen space. Its thumbnail previews--an improvement over Vista's--work well even when you have multiple windows open for one application. And the new Jump Lists feature gives you right-click access to context-sensitive menus of options (such as the ability to play shuffled music in Windows Media Player) even before you've launched an application. Even the nub on the right edge of the taskbar, which you can click to reveal the desktop, is a welcome, subtle enhancement. (One taskbar quibble: The border around running apps in the taskbar isn't a clear enough cue to distinguish between them and those that aren't currently active.)

The system tray--which is officially called the notification area, although I don't know anybody who calls it that--is no longer one of Windows' most aggravating "features." When you install new applications, any associated system-tray applets are cordoned off in a holding pen, where they can't clutter up the tray and can't use word balloons to pester you with information that you may or may not care about. You can also choose to have an applet appear in the system tray but in bound-and-gagged form, so it can't pop up messages. Microsoft has also dramatically reduced the volume of distracting messages from Windows itself, courtesy of Action Center, which queues up system alerts so that you can check them out at your convenience.

UAC is now tolerable: Windows Vista introduced User Account Control, which tries to warn you of attempts by viruses and other malware to tamper with your system. But it essentially has two settings: So Annoying You Click Without Thinking, and Off. In Windows 7, you get two intermediate settings that alert you only if a program changes settings, with or without the melodramatic screen-dimming effect. This new version is such a reasonable approach that it's even more mysterious how Microsoft could have botched the Vista version so badly.

Libraries collect your files: For years, Microsoft has tried to train Windows users to store all of their personal files in one place, helpfully providing a folder named My Documents for that purpose. Many of us blithely ignore the suggestion and store stuff willy-nilly around our hard drives. A new feature called Libraries splits the difference by giving you virtual folders for documents, music, photos, and videos that combine the contents of whichever folders you specify into one unified view. The Pictures Library, for instance, can show all your photos even if they're stored in a dozen different places. Still, there's room for improvement--Libraries would be even more useful if they were integrated with the existing Saved Searches feature, which creates another, separate form of virtualized folder.

The Bad...

HomeGroups are disappointing: HomeGroups sound like a nifty idea--a way to share folders full of media and documents between PCs across a network, so you can peruse photos stored on a desktop in the den from your laptop in the living room, for instance. But Microsoft's implementation is surprisingly half-baked: Rather than letting you specify a password during setup, for instance, it assigns one consisting of ten alphanumeric gibberish characters and tells you to write it down. And HomeGroups work only if all the PCs in question run Windows 7. A version that also worked on XP, Vista, and--dare I say it?--Macs would have been far cooler.

Windows Update can still shut you down: There's no reason to believe that Windows 7 will require less patching than earlier versions of the OS. If you use Windows Update the way Microsoft recommends, however, your computer may still demand that you shut it down so it can update itself, or it may decide to devote an extended amount of time to installing updates when you try to reboot it. In the largely compliant and considerate Win 7, this aggressive approach to updates is a flashback to Windows' pushy past.

You can't upgrade Windows XP: If you want to upgrade a PC from XP to 7, you'll need to start anew, reinstalling all of your apps and re-creating your settings. (Windows Vista users can opt to install 7 on top of their current OS, although not in every possible scenario.) Microsoft's decision not to enable XP-to-7 upgrades is defensible--a fresh install will probably be more reliable than one plunked down on top of XP's eight-year-old underpinnings--but it will scare off some XP users who would probably love Windows 7 once they got it up and running.


...And the Unknown

How bad will compatibility issues be? Windows 7 looks and works differently than Windows Vista does, but below the surface it isn't radically different. That should make for fewer headaches with incompatible drivers and software--and indeed, it helped even the earliest Windows 7 preview versions run surprisingly smoothly for prerelease operating systems. But as millions of people install Windows 7 on an endless array of PCs, undoubtedly some of them will encounter problems that Microsoft didn't anticipate. (I've run into setup quirks and driver issues with the Windows 7 RTM version myself, but I've been able to work around them--by installing from a USB drive rather than a DVD, for instance.)

Will hardware companies take to Device Stage? This new feature gives your printer, camera, and other peripherals information centers of their own, which hardware manufacturers can customize with features such as links to online manuals and troubleshooting tools. But unless companies invest the time to build useful Device Stages, this could be another Microsoft bright idea that doesn't go much of anywhere. Also, parts of Device Stage look short on substance (giant photorealistic renderings of your peripherals!) and others look potentially irritating (printer companies hawking ink cartridges right inside your OS!). All in all, I don't think it'll be a tragedy if Device Stage doesn't catch on.
Is touch input a boon or a boondoggle? Windows 7 is the first version of the OS with special support for multitouch input--for example, if it notices that you've opened the Start menu with your finger rather than the mouse pointer, you'll see a roomier version of the menu that takes less precision to navigate. Of course, all of that requires a multitouch-capable PC, and only a handful (such as the upscale HP TouchSmart) are on the market. Windows 7's arrival might prompt a profusion of interesting new touch-enabled PCs--but even then, what we really need are interesting touch-enabled applications. (Microsoft's touch demos have tended to feature such ho-hum uses as fingerpainting in Windows' own Paint program.)
The Bottom Line

Last year Microsoft tried to repair Windows Vista's reputation by pretending it was a new OS code-named Mojave and getting focus-group subjects to say nice things about it. If the company had released a Vista back in 2007 that was as pleasant to use as Windows 7 is, the OS might never have had image problems in the first place.

Even when an OS upgrade is as appealing as this one, it makes sense to proceed with caution. Many of the people who grab Windows 7 at the first possible opportunity will be happy they did. But I suspect that some of the folks who wait a bit more--installing the new OS only after other people have discovered unexpected glitches with applications and drivers--will be even happier. And if you're using an aging PC, it's perfectly sensible to hold off on Windows 7 until you're ready to buy a brand-new system that's designed to run it well.
Read more »

Monday, September 20, 2010

100 Best companies For You

100 Best companies

1 Genentech 20 Midsized 8,121
2 Wegmans Food Markets 7 Large 31,890
3 Valero Energy 5 Large 16,582
4 Griffin Hospital 2 Small 1,049
5 W.L. Gore & Associates 6 Midsized 4,537
6 Container Store 16 Midsized 2,857
7 Vision Service Plan -2 Small 1,915
8 J.M. Smucker -13 Midsized 2,930
9 Recreational Equipment (REI) 9 Midsized 7,443
10 S.C. Johnson 0 Midsized 3,404
11 Boston Consulting Group 17 Small 1,261
12 Plante & Moran 9 Small 1,356
13 Quicken Loans 60 Midsized 2,951
14 HomeBanc Mortgage 9 Small 1,342
15 Whole Foods Market 18 Large 33,248
16 Edward Jones 3 Large 29,197
17 Republic Bancorp -9 Small 1,190
18 Baptist Health Care 0 Midsized 4,003
19 Alston & Bird 3 Small 1,509
20 Kimley-Horn & Associates 24 Small 1,777
21 QuikTrip 6 Midsized 7,819
22 American Century Investments 0 Small 1,778
23 Qualcomm 23 Midsized 7,562
24 David Weekley Homes 18 Small 1,361
25 Cisco Systems 8 Large 26,644
26 Goldman Sachs 3 Large 11,836
27 Network Appliance 26 Midsized 2,712
28 Four Seasons -12 Large 10,625
29 Starbucks 26 Large 91,056
30 SAS Institute 1 Midsized 5,118
31 Robert W. Baird -1 Small 2,125
32 Alcon Laboratories 1 Midsized 6,227
33 Nugget Markets 10 Small 1,091
34 CDW 7 Midsized 3,948
35 American Fidelity Assurance 1 Small 1,385
36 TDIndustries -9 Small 1,297
37 American Express -3 Large 42,453
38 Milliken -3 Midsized 9,300
39 Amgen 6 Large 11,374
40 JM Family Enterprises 9 Midsized 4,114
41 Timberland -2 Small 1,978
42 Microsoft 1 Large 37,746
43 Intuit 6 Midsized 6,516
44 Pella 7 Midsized 8,758
45 SRA International 23 Midsized 3,986
46 Nordstrom 3 Large 45,112
47 AFLAC 5 Midsized 4,034
48 Perkins Coie -4 Small 1,553
49 Nixon Peabody 4 Small 1,563
50 Northwest Community Hospital 1 Midsized 3,089
51 Genzyme 9 Midsized 5,399
52 Eli Lilly -7 Large 21,898
53 Hot Topic 22 Midsized 8,314
54 Arnold & Porter -4 Small 1,383
55 Station Casinos 6 Large 10,967
56 Publix Super Markets 3 Large 129,412
57 Synovus 0 Large 11,860
58 Stew Leonard's -2 Small 1,819
59 Baptist Health South Florida 3 Large 10,706
60 Vanguard Group 8 Large 11,070
61 Sherwin-Williams 14 Large 27,938
62 Memorial Health 2 Midsized 4,301
63 Russell Investment Group 22 Small 1,092
64 FedEx 7 Large 212,241
65 PCL Construction 26 Midsized 2,543
66 MITRE 4 Midsized 5,575
67 Ernst & Young 5 Large 23,657
68 Bronson Healthcare Group 6 Midsized 3,396
69 Valassis 0 Small 1,803
70 A.G. Edwards 0 Large 15,708
71 PricewaterhouseCoopers 11 Large 26,392
72 Booz Allen Hamilton 9 Large 15,582
73 Yahoo 29 Midsized 5,444
74 Standard Pacific 22 Small 2,317
75 Quad/Graphics 1 Large 10,399
76 Children's Heathcare of Atlanta 4 Midsized 4,910
77 National Instruments 4 Small 2,148
78 Methodist Hospital System 6 Midsized 8,714
79 East Penn Manufacturing 2 Midsized 4,082
80 CH2M Hill 48 Large 17,770
81 Autodesk 5 Small 2,098
82 Bingham McCutchen 0 Small 1,542
83 Texas Instruments -6 Large 16,102
84 Worthington Industries -4 Midsized 6,233
85 First Horizon National 11 Large 13,228
86 Principal Financial Group 2 Large 12,723
87 Washington Mutual -7 Large 54,396
88 Morrison & Foerster 3 Small 2,145
89 Mayo Clinic 4 Large 38,085
90 John Wiley & Sons 1 Small 2,090
91 Granite Construction 6 Midsized 4,300
92 Men's Wearhouse 9 Large 10,757
93 CarMax 12 Large 11,400
94 Bright Horizons 8 Large 13,551
95 Wm. Wrigley Jr. -2 Midsized 3,372
96 IKEA (U.S.) 18 Midsized 9,499
97 Intel 1 Large 48,655
98 General Mills -5 Large 17,993
99 Marriott International 3 Large 126,704
100 Nike 5 Large 12,502
Read more »

Friday, January 8, 2010

How to find invisible friends in GTalk


Here is the simple trick to find the friends who are online in Google talk but appearing offline.

Follow these steps to check who all are in invisible state.

  1. Open the Chat window by clicking your friend’s name
  2. Click you friends name and select “Go off the Record”.
  3. Send some message to that user.
  4. if you get the feedback from gtalk that “User is offline and can’t receive messages” in red color means that the user is really offline.
  5. But if you get no response that means that the user is appearing offline and in invisible mode.



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Tuesday, December 8, 2009

Making your own Radio Station

Creating your own radio station can be a lot of fun, and with Internet radio becoming more and more popular, anyone can create their own radio shows and voice their opinions. Although setting up your radio station might not be that difficult, there are a lot of behind-the-scenes issues you will have to deal with, such as getting permission from music artists to play their songs on your station and paying out royalties to those artists. Many platforms that allow you to broadcast over the Internet will not allow you to play any music that you do not have permission to play.
Instructions

Things You'll Need:

  • Computer Internet UBroadcast account UBroadcast software Microphone Recording interface Music
And now you have to follow the steps to create a Chanel of your own. Remember "Use if for a good cause !"

  1. Make an outline of what type of radio station you want to be and who you want your audience to be. Decide whether you want to be talk radio, music radio or a mixture of both. Next, decide what type of music and programming should be on your station and who that programming will be aimed at. If you are building a baseball talk radio program you will want to target baseball fans and have programming that relates to the subject matter.

  2. Get all the necessary equipment together to broadcast your radio station. You will need a microphone and a recording interface. You should be able to find a decent microphone and interface on eBay or Musician's Friend for an affordable price. You will also need a decent pair of headphones. A recording interface is hardware that plugs into your computer's USB port and allows you to hook up instruments including microphones and guitars to your computer for recording and live broadcasting.

  3. Go to UBroadcast and sign up for an account. The signup is free and only requires you to have a valid email address. Make sure you carefully read the Terms of Service before finalizing your signup so that you know what you are allowed to do and not allowed to do during a broadcast. UBroadcast is uncensored, but it does require you to have permission before playing copyrighted material on the air.

  4. Install the UBroadcast software, which is free and easy to use. Follow all the prompts to install the software properly.

  5. Contact major record labels, artist management and artists themselves and get permission to play their music live on the air. UBroadcast is a member of ASCAP, and it expects anyone who uses its software and platform to have permission and to pay out royalties as needed on music that is played on air. A failure to do so can result in a lawsuit and a hefty fine.

  6. Open the UBroadcast software and set up your playlist. Once the program has been opened you will see an option in the upper left corner that says "Add MP3." This is where you will add all the music you will play during your broadcast. Organize the music into a set list and save it for future use.

  7. Install your interface software. Your microphone will not be able to work with the UBroadcast software until the recording interface is hooked up and the mic is hooked up to the interface. Insert the installation disc into the computer hard drive and follow the prompts to install the software. Plug the interface into the USB port on your computer.

  8. Hook up your microphone to the interface along with your headphones. After the mic and headphones are plugged in you are ready to begin broadcasting.

  9. Click "Go Live" on the program menu, and begin broadcasting. You will be given options to name your radio station and to name the current broadcast as well. This allows you to name and create your own radio shows to go along with the music you will play.

  10. Sell advertising time on the air to local businesses to help promote their products and to pay for royalties.




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Thursday, December 3, 2009

Nokia Mobile Phone Code functions

* 3370# This Nokia code activates Enhanced Full Rate Codec (EFR) - Your
Nokia cell phone uses the best sound quality but talk time is reduced
my approx. 5%

#3370# Deactivate Enhanced Full Rate Codec (EFR) .

* #4720# Activate Half Rate Codec - Your phone uses a lower quality
sound but you should gain approx 30% more Talk Time.

* #4720# With this Nokia code you can deactivate the Half Rate Codec.
* #0000# Displays your phones software version, 1st Line : Software
Version, 2nd Line : Software Release Date, 3rd Line : Compression Type

* #9999# Phones software version if *#0000# does not work.

* #06# For checking the International Mobile Equipment Identity (IMEI Number) .

#pw+1234567890+1# Provider Lock Status. (use the "*" button to obtain
the "p,w" and "+" symbols).

#pw+1234567890+2# Network Lock Status. (use the "*" button to obtain
the "p,w" and "+" symbols) .

#pw+1234567890+3# Country Lock Status. (use the "*" button to obtain
the "p,w" and "+" symbols).

#pw+1234567890+4# SIM Card Lock Status. (use the "*" button to obtain
the "p,w" and "+" symbols) .

* #147# This lets you know who called you last (Only vodofone).

* #1471# Last call (Only vodofone) .

* #21# This phone code allows you to check the number that "All Calls"
are diverted to.

* #2640# Displays phone security code in use .

* #30# Lets you see the private number.

* #43# Allows you to check the "Call Waiting" status of your cell phone.

* #61# Allows you to check the number that "On No Reply" calls are diverted to .

* #62# Allows you to check the number that "Divert If Unreachable (no
service)" calls are diverted to .

* #67# Allows you to check the number that "On Busy Calls" are diverted to

* #67705646# Phone code that removes operator logo on 3310 & 3330

* #73# Reset phone timers and game scores.

* #746025625# Displays the SIM Clock status, if your phone supports
this power saving feature "SIM Clock Stop Allowed", it means you will
get the best standby time possible .

* #7760# Manufactures code.

*#7780# Restore factory settings.

* #8110# Software version for the nokia 8110.

* #92702689# Displays - 1.Serial Number, 2.Date Made, 3.Purchase Date,
4.Date of last repair (0000 for no repairs), 5.Transfer User Data. To
exit this mode you need to switch your phone off then on again.

* #94870345123456789# Deactivate the PWM-Mem.

* *21*number# Turn on "All Calls" diverting to the phone number entered.

* *61*number# Turn on "No Reply" diverting to the phone number entered .

* *67*number# Turn on "On Busy" diverting to the phone number entered .

12345 This is the default security code .

press and hold # Lets you switch between lines.

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Monday, November 30, 2009

WHAT IS IN WINDOWS 7 OS....?

Microsoft's new OS isn't perfect, but it is what Windows Vista should have been. Here's a hands-on look at the version that's beginning to hit PCs.

For most people who are considering moving to Windows 7, October 22 is D-Day. On that date Microsoft's newest operating system lands on store shelves, both as a shrinkwrapped upgrade and preinstalled on new PCs. For some folks, though, D-Day has already arrived. Microsoft has issued the final RTM (release to manufacturing) version of Windows 7 to large companies that buy Windows via volume licenses, as well as to IT pros who belong to its Technet service. The Windows Vista era is officially drawing to a close--although you could argue that it never really quite started--and the Windows 7 one is under way.


And that promises to be a good thing, whether you're a satisfied Vista user, a disgruntled one, or a Windows XP holdout who has been waiting for something better. Windows 7 feels like an anti-Vista: Unlike that OS, for instance, it doesn't try to dazzle you with flashy new visual effects. With the removal of Vista applications such as Photo Gallery and Movie Maker, Win 7 actually does fewer things than Vista did. Even its unprepossessing name is a change from the epic-sounding monikers that began with the unfortunate Windows Millennium Edition.

But Windows 7's lack of glitz is a huge part of its appeal. Unlike the increasingly chaotic and annoying Microsoft OSs that preceded it, Windows 7 is designed to stay out of your way so that you can get stuff done. It smartly addresses Windows annoyances both new (User Account Control) and old (the system tray). And the final version I've been using seems to realize the promise of the rough drafts we started testing last October.

Windows 7 isn't without its warts, but I haven't been so impressed by a new Microsoft operating system since Windows 2000 debuted close to a decade ago. Here's a quick look at some of its best features, a few drawbacks, and areas where reserving judgment makes sense. (Much more PC World coverage is on its way, including an in-depth review with speed benchmarks, upgrade tips, and Windows 7 system reviews.)


The Good...

The OS is less piggish: One of the many regrettable things about the initial version of Windows Vista was that its signature feature--the splashy Aero environment--was too much of a resource hog to run well on many early-2007 PCs (even those that had been promoted as Vista-capable). The PC World Test Center hasn't benchmarked the shipping version of Windows 7 yet--stay tuned--but all signs point to this OS being sprightly enough to perform decently on all current systems, including those allegedly underpowered, pint-size machines known as netbooks.

The taskbar has been reinvented: It's amazing how little the taskbar and its system tray have changed since Windows 95. In Windows 7, they both undergo sweeping, long-overdue makeovers. For the most part, the results are extremely pleasing.

The new taskbar's default style does away with text labels and relies solely on program icons, therefore making better use of screen space. Its thumbnail previews--an improvement over Vista's--work well even when you have multiple windows open for one application. And the new Jump Lists feature gives you right-click access to context-sensitive menus of options (such as the ability to play shuffled music in Windows Media Player) even before you've launched an application. Even the nub on the right edge of the taskbar, which you can click to reveal the desktop, is a welcome, subtle enhancement. (One taskbar quibble: The border around running apps in the taskbar isn't a clear enough cue to distinguish between them and those that aren't currently active.)

The system tray--which is officially called the notification area, although I don't know anybody who calls it that--is no longer one of Windows' most aggravating "features." When you install new applications, any associated system-tray applets are cordoned off in a holding pen, where they can't clutter up the tray and can't use word balloons to pester you with information that you may or may not care about. You can also choose to have an applet appear in the system tray but in bound-and-gagged form, so it can't pop up messages. Microsoft has also dramatically reduced the volume of distracting messages from Windows itself, courtesy of Action Center, which queues up system alerts so that you can check them out at your convenience.

UAC is now tolerable: Windows Vista introduced User Account Control, which tries to warn you of attempts by viruses and other malware to tamper with your system. But it essentially has two settings: So Annoying You Click Without Thinking, and Off. In Windows 7, you get two intermediate settings that alert you only if a program changes settings, with or without the melodramatic screen-dimming effect. This new version is such a reasonable approach that it's even more mysterious how Microsoft could have botched the Vista version so badly.

Libraries collect your files: For years, Microsoft has tried to train Windows users to store all of their personal files in one place, helpfully providing a folder named My Documents for that purpose. Many of us blithely ignore the suggestion and store stuff willy-nilly around our hard drives. A new feature called Libraries splits the difference by giving you virtual folders for documents, music, photos, and videos that combine the contents of whichever folders you specify into one unified view. The Pictures Library, for instance, can show all your photos even if they're stored in a dozen different places. Still, there's room for improvement--Libraries would be even more useful if they were integrated with the existing Saved Searches feature, which creates another, separate form of virtualized folder.

The Bad...

HomeGroups are disappointing: HomeGroups sound like a nifty idea--a way to share folders full of media and documents between PCs across a network, so you can peruse photos stored on a desktop in the den from your laptop in the living room, for instance. But Microsoft's implementation is surprisingly half-baked: Rather than letting you specify a password during setup, for instance, it assigns one consisting of ten alphanumeric gibberish characters and tells you to write it down. And HomeGroups work only if all the PCs in question run Windows 7. A version that also worked on XP, Vista, and--dare I say it?--Macs would have been far cooler.

Windows Update can still shut you down: There's no reason to believe that Windows 7 will require less patching than earlier versions of the OS. If you use Windows Update the way Microsoft recommends, however, your computer may still demand that you shut it down so it can update itself, or it may decide to devote an extended amount of time to installing updates when you try to reboot it. In the largely compliant and considerate Win 7, this aggressive approach to updates is a flashback to Windows' pushy past.

You can't upgrade Windows XP: If you want to upgrade a PC from XP to 7, you'll need to start anew, reinstalling all of your apps and re-creating your settings. (Windows Vista users can opt to install 7 on top of their current OS, although not in every possible scenario.) Microsoft's decision not to enable XP-to-7 upgrades is defensible--a fresh install will probably be more reliable than one plunked down on top of XP's eight-year-old underpinnings--but it will scare off some XP users who would probably love Windows 7 once they got it up and running.


...And the Unknown

How bad will compatibility issues be? Windows 7 looks and works differently than Windows Vista does, but below the surface it isn't radically different. That should make for fewer headaches with incompatible drivers and software--and indeed, it helped even the earliest Windows 7 preview versions run surprisingly smoothly for prerelease operating systems. But as millions of people install Windows 7 on an endless array of PCs, undoubtedly some of them will encounter problems that Microsoft didn't anticipate. (I've run into setup quirks and driver issues with the Windows 7 RTM version myself, but I've been able to work around them--by installing from a USB drive rather than a DVD, for instance.)

Will hardware companies take to Device Stage? This new feature gives your printer, camera, and other peripherals information centers of their own, which hardware manufacturers can customize with features such as links to online manuals and troubleshooting tools. But unless companies invest the time to build useful Device Stages, this could be another Microsoft bright idea that doesn't go much of anywhere. Also, parts of Device Stage look short on substance (giant photorealistic renderings of your peripherals!) and others look potentially irritating (printer companies hawking ink cartridges right inside your OS!). All in all, I don't think it'll be a tragedy if Device Stage doesn't catch on.
Is touch input a boon or a boondoggle? Windows 7 is the first version of the OS with special support for multitouch input--for example, if it notices that you've opened the Start menu with your finger rather than the mouse pointer, you'll see a roomier version of the menu that takes less precision to navigate. Of course, all of that requires a multitouch-capable PC, and only a handful (such as the upscale HP TouchSmart) are on the market. Windows 7's arrival might prompt a profusion of interesting new touch-enabled PCs--but even then, what we really need are interesting touch-enabled applications. (Microsoft's touch demos have tended to feature such ho-hum uses as fingerpainting in Windows' own Paint program.)
The Bottom Line

Last year Microsoft tried to repair Windows Vista's reputation by pretending it was a new OS code-named Mojave and getting focus-group subjects to say nice things about it. If the company had released a Vista back in 2007 that was as pleasant to use as Windows 7 is, the OS might never have had image problems in the first place.

Even when an OS upgrade is as appealing as this one, it makes sense to proceed with caution. Many of the people who grab Windows 7 at the first possible opportunity will be happy they did. But I suspect that some of the folks who wait a bit more--installing the new OS only after other people have discovered unexpected glitches with applications and drivers--will be even happier. And if you're using an aging PC, it's perfectly sensible to hold off on Windows 7 until you're ready to buy a brand-new system that's designed to run it well.
Read more »

what is operating system....?

LETS TRY TO KNOW ABOUT OS.......
The most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs. Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers.


For large systems, the operating system has even greater responsibilities and powers. It is like a traffic cop -- it makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system.



Operating systems can be classified as follows:
# Multi-user : Allows two or more users to run programs at the same time. Some operating systems permit hundreds or even thousands of concurrent users.
# Multiprocessing : Supports running a program on more than one CPU.
# Multitasking : Allows more than one program to run concurrently.
# Multithreading : Allows different parts of a single program to run concurrently.
# Real time : Responds to input instantly. General-purpose operating systems, such as DOS and UNIX, are not real-time.

Operating systems provide a software platform on top of which other programs, called application programs, can run. The application programs must be written to run on top of a particular operating system. Your choice of operating system, therefore, determines to a great extent the applications you can run. For PCs, the most popular operating systems are DOS, OS/2, and Windows, but others are available, such as Linux.

As a user, you normally interact with the operating system through a set of commands. For example, the DOS operating system contains commands such as COPY and RENAME for copying files and changing the names of files, respectively. The commands are accepted and executed by a part of the operating system called the command processor or command line interpreter. Graphical user interfaces allow you to enter commands by pointing and clicking at objects that appear on the screen.
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HARD DISK BASICS...!!!

Hard disks were invented in the 1950s. They started as large disks up to 20 inches in diameter holding just a few megabytes. They were originally called "fixed disks" or "Winchesters" (a code name used for a popular IBM product). They later became known as "hard disks" to distinguish them from "floppy disks." Hard disks have a hard platter that holds the magnetic medium, as opposed to the flexible plastic film found in tapes and floppies.

At the simplest level, a hard disk is not that different from a cassette tape. Both hard disks and cassette tapes use the same magnetic recording techniques described in How Tape Recorders Work. Hard disks and cassette tapes also share the major benefits of magnetic storage -- the magnetic medium can be easily erased and rewritten, and it will "remember" the magnetic flux patterns stored onto the medium for many years.


WHAT IS HARD DISK

A hard disk is part of a unit, often called a "disk drive," "hard drive," or "hard disk drive," that stores and provides relatively quick access to large amounts of data on an electromagnetically charged surface or set of surfaces. Today's computers typically come with a hard disk that contains several billion bytes (gigabytes) of storage.

A hard disk is really a set of stacked "disks," each of which, like phonograph records, has data recorded electromagnetically in concentric circles or "tracks" on the disk. A "head" (something like a phonograph arm but in a relatively fixed position) records (writes) or reads the information on the tracks. Two heads, one on each side of a disk, read or write the data as the disk spins. Each read or write operation requires that data be located, which is an operation called a "seek." (Data already in a disk cache, however, will be located more quickly.)

A hard disk/drive unit comes with a set rotation speed varying from 4500 to 7200 rpm. Disk access time is measured in milliseconds. Although the physical location can be identified with cylinder, track, and sector locations, these are actually mapped to a logical block address (LBA) that works with the larger address range on today's hard disks.
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WHAT IS RAM..?

RAM is an abbreviation for Random Access Memory. It usually refers to "temporary" memory, as when the system is shut down, the memory is lost. This is why the memory is referred to as being "random," as any piece of information can be circulated through the memory regardless of its location and its relation to any other information within the RAM. The first of the many RAMs to come in the future was created in 1951 and was used until the late 1960s and early 1970s.

TYPES OF RAM..


The following are some common types of RAM:

SRAM: Static random access memory uses multiple transistors, typically four to six, for each memory cell but doesn't have a capacitor in each cell. It is used primarily for cache.

DRAM: Dynamic random access memory has memory cells with a paired transistor and capacitor requiring constant refreshing.

FPM DRAM: Fast page mode dynamic random access memory was the original form of DRAM. It waits through the entire process of locating a bit of data by column and row and then reading the bit before it starts on the next bit. Maximum transfer rate to L2 cache is approximately 176 MBps.


• EDO DRAM:
Extended data-out dynamic random access memory does not wait for all of the processing of the first bit before continuing to the next one. As soon as the address of the first bit is located, EDO DRAM begins looking for the next bit. It is about five percent faster than FPM. Maximum transfer rate to L2 cache is approximately 264 MBps.

SDRAM: Synchronous dynamic random access memory takes advantage of the burst mode concept to greatly improve performance. It does this by staying on the row containing the requested bit and moving rapidly through the columns, reading each bit as it goes. The idea is that most of the time the data needed by the CPU will be in sequence. SDRAM is about five percent faster than EDO RAM and is the most common form in desktops today. Maximum transfer rate to L2 cache is approximately 528 MBps.

DDR SDRAM: Double data rate synchronous dynamic RAM is just like SDRAM except that is has higher bandwidth, meaning greater speed. Maximum transfer rate to L2 cache is approximately 1,064 MBps (for DDR SDRAM 133 MHZ).

RDRAM: Rambus dynamic random access memory is a radical departure from the previous DRAM architecture. Designed by Rambus, RDRAM uses a Rambus in-line memory module (RIMM), which is similar in size and pin configuration to a standard DIMM. What makes RDRAM so different is its use of a special high-speed data bus called the Rambus channel. RDRAM memory chips work in parallel to achieve a data rate of 800 MHz, or 1,600 MBps. Since they operate at such high speeds, they generate much more heat than other types of chips. To help dissipate the excess heat Rambus chips are fitted with a heat spreader, which looks like a long thin wafer. Just like there are smaller versions of DIMMs, there are also SO-RIMMs, designed for notebook computers.

Credit Card Memory: Credit card memory is a proprietary self-contained DRAM memory module that plugs into a special slot for use in notebook computers.

PCMCIA Memory Card: Another self-contained DRAM module for notebooks, cards of this type are not proprietary and should work with any notebook computer whose system bus matches the memory card's configuration.

CMOS RAM: CMOS RAM is a term for the small amount of memory used by your computer and some other devices to remember things like hard disk settings -- see Why does my computer need a battery? for details. This memory uses a small battery to provide it with the power it needs to maintain the memory contents.

VRAM: VideoRAM, also known as multiport dynamic random access memory (MPDRAM), is a type of RAM used specifically for video adapters or 3-D accelerators. The "multiport" part comes from the fact that VRAM normally has two independent access ports instead of one, allowing the CPU and graphics processor to access the RAM simultaneously. VRAM is located on the graphics card and comes in a variety of formats, many of which are proprietary. The amount of VRAM is a determining factor in the resolution and color depth of the display. VRAM is also used to hold graphics-specific information such as 3-D geometry data and texture maps. True multiport VRAM tends to be expensive, so today, many graphics cards use SGRAM (synchronous graphics RAM) instead. Performance is nearly the same, but SGRAM is cheaper.
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