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Wednesday, August 18, 2010

A Brief History of the Computer..!!







A Brief History of the Computer
ENIAC, 1946
Please wait while images are being loaded.....by Wowmailz Regarded as the first general purpose electronic computer, the Electronic Numerical Integrator and Computer (ENIAC) was initially commissioned for the use in World War II, but not completed until one year after the war had ended . Installed at the University of Pennsylvania, its 40 separate eight-foot-high racks and 18,000 tubes were intended to help calculate ballistic trajectories.

  




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SAGE, 1954
 
A gigantic computerized air defense system, SAGE (Semi-Automatic Ground Environment) was designed to help the Air Force track radar data in real time. Equipped with technical advances such as modems and graphical displays, the machine weighed 300 tons and occupied one floor of a concrete blockhouse.

 


Please wait while images are being loaded.....by WowmailzNEAC 2203, 1960

Manufactured by the Nippon Electric Company (NEC), the drum-based machine was one of the earliest transistorized Japanese computers. It was used for business, scientific and engineering applications.
 
 




Please wait while images are being loaded.....by WowmailzIBM System/360, 1964
Part of a family of interchangeable computers, the IBM System/360 mainframe was the first to cover a complete range of applications, from small to large, from commercial to scientific. Users were able to enlarge or shrink their setup without having to make headache-inducing software upgrades as well. Higher-end System/360 models had roles in NASA's Apollo missions as well as air traffic control systems.

Please wait while images are being loaded.....by WowmailzCDC 6600, 1964
 
For a time the fastest machine in the world, Control Data Corporation' s 6600 machine was designed by noted computer architect Seymour Cray. It retained its speed crown until 1969, when Cray designed his next supercomputer.






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The first successful commercial minicomputer, the PDP-8, made by the Digital Equipment Corporation, sold more than 50,000 units upon its release, the most of any computer up to that time. Years before Apple and Gnu/Linux offered alternatives to the dominant IBM/Microsoft paradigms, DEC proposed its own vision, by encouraging users to educate themselves and take part in the evolution of the line.


Please wait while images are being loaded.....by WowmailzInterface Message Processor, 1969
 
Conceived at the height of the Cold War, when the U.S. government sought a way to keep its network of computers alive in case certain nodes were destroyed in a nuclear attack or other hostile act, the IMP featured the first generation of gateways, which are today known as routers. As such, IMP performed a critical task in the development of the ARPANET (Advanced Research Projects Agency Network), the world's first operational packet switching network, and the predecessor of the contemporary global Internet.
Please wait while images are being loaded.....by WowmailzKenbak-1, 1971
 
Often considered the world's first "personal computer" the Kenbak was touted as an easy-to-use educational tool, but it failed to sell more than several dozen units. Lacking a microprocessor, it had only 256 bytes of computing power and its only output was a series of blinking lights.



Please wait while images are being loaded.....by WowmailzCray-1, 1976
 
At the time of its release, the Cray-1, above, was the fastest computing machine at the world. Despite its price tag  between $5 and $10 million  it sold well. It is one of the many machines designed by Seymour Cray, a computer architect who devoted his life to the creation of so-called supercomputers, machines which prioritized processing capacity and speed of calculation.





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Apple I, 1976
Initially conceived by Steve Wozniak (a.k.a. "Woz") as a build-it-yourself kit computer, Apple I was initially rejected by his bosses at Hewlett-Packard. Undeterred, he offered it to Silicon Valley's Homebrew Computer Club and, together with his friend Steve Jobs, managed to sell 50 pre-built models to The Byte Shop in Mountain View, California. The suggested retail price: $666. Though sales were low, the machine paved the way for the smash success of the Apple II.

Please wait while images are being loaded.....by WowmailzIBM Personal Computer, 1981
 
Featuring an independent keyboard, printer and monitor, the slick, complete-looking package that was the IBM PC helped push personal computing out of the hobbyist's garage and into the corporate and consumer mainstream. Its immense commercial success made it the hallmark of personal computing for many years and led other manufacturers to produce similar desktop models.





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The first commercial portable computer, the Osborne weighed 24 lbs. and cost less than $2,000. It gained popularity because of its low price and the extensive software library that came with it





Please wait while images are being loaded.....by WowmailzHewlett-Packard 150, 1983

Representing the first step in a technology widely available today, the HP 150 was the first commercially available computer with touch screen technology. The 9-inch computer screen was surrounded by infrared transmitters and receivers that detected the position of the user's finger.








Please wait while images are being loaded.....by WowmailzDeep Blue, 1997

Begun at IBM in the late 80's, the Deep Blue project was an attempt at using parallel processing to solve a difficult problem  namely, beating the best chess player in the world, Garry Kasparov. During a six-game match, which Kasparov ultimately lost, the confounded master attributed one move to "the hand of God."






Please wait while images are being loaded.....by WowmailziPhone, 2007

The handy little device introduced by Apple CEO Steve Jobs in 2007 not only brings together internet access, a regular cell phone, camera and media player, it supports a wide variety of third party applications, or apps, that supply everything from recipes to maps of the night sky, and wraps it all in a sleek, glossy exterior.





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iPad, 2010

And now the tablet is finally here. It's called an iPad, and it's half an inch thick, weighs 1.5 pounds and features a 9.7 inch display. As Steve Jobs says in the presentation above, the device has a 10-hour battery life, so you'll be able to use all the 3rd-party apps, games, video and online newspapers you want. The Wi-Fi iPad begins at $499 while the 3G version begins at $629.
                   
  
 
 

How to prevent pen drive from getting infected with Virus ?

          Friends many of your PC/laptop's normally gets virus because of Pen Drives or USB devices (Even PC's who are not connected to network ). Some Virus like Ravmon Virus , Heap41a worm which are not detected by anti virus normally spreads mostly by the Pen Drives . In such a case what can you do to prevent your PC from getting infected with Virus that spreads through USB devices or Pen Drives ?

You can protect your PC by just following the simple steps below . It won't take much time.
  • Connect your Pen Drive or USB drive to your computer .
  • Now a dialogue window will popup asking you to choose among the options as shown in the figure.
  • Don't choose any of them , Just simply click Cancel .
  • Now go to Start--> Run and type cmd to open the Command Promt window .
  • Now go to My Computer and Check the Drive letter of your USB drive or Pen Drive. ( E.g. If it is written Kingston (I , then I: will be the drive letter .)
  • In the Command Window ( cmd ) , type the drive letter: and Hit Enter .
  • Now type dir/w/o/a/p and Hit Enter.
  • You will get a list of files . In the list , search if anyone of the following do exist .
  1. Autorun.inf
  2. New Folder.exe
  3. Bha.vbs
  4. Iexplore.vbs
  5. Info.exe
  6. New_Folder.exe
  7. Ravmon.exe
  8. RVHost.exe or any other files with .exe Extension(exe files like Folder icon) .
  • If you find any one of the files above , Run the command attrib -h -r -s -a *.* and Hit Enter.
  • Now Delete each File using the following Command del filename ( E.g del autorun.inf ) .
  • That's it . Now just scan your USB drive with the anti virus you have to ensure that you made your Pen Drive free of Virus .

Now Unplug your Pen Drive or USB device and Plug it again to your Laptop/PC . Before removing your Pen Drive from others Computer , Don't forget to search for .exe files using the Windows search and remove them .

Friday, October 30, 2009

Windows XP RUN commands.

Accessibility Controls - access.cpl
Add Hardware Wizard - hdwwiz.cpl
Add/Remove Programs - appwiz.cpl
Administrative Tools - control admintools
Automatic Updates - wuaucpl.cpl
Bluetooth Transfer Wizard - fsquirt
Calculator - calc
Certificate Manager - certmgr.msc
Character Map - charmap
Check Disk Utility - chkdsk
Clipboard Viewer - clipbrd
Command Prompt - cmd
Component Services - dcomcnfg
Computer Management - compmgmt.msc
Date and Time Properties - timedate.cpl
DDE Shares - ddeshare
Device Manager - devmgmt.msc
Direct X Control Panel (If Installed)* - directx.cpl
Direct X Troubleshooter - dxdiag
Disk Cleanup Utility - cleanmgr
Disk Defragment - dfrg.msc
Disk Management - diskmgmt.msc
Disk Partition Manager - diskpart
Display Properties - control desktop
Display Properties - desk.cpl
Display Properties (w/Appearance Tab Preselected) - control color
Dr. Watson System Troubleshooting Utility - drwtsn32
Driver Verifier Utility - verifier
Event Viewer - eventvwr.msc
File Signature Verification Tool - sigverif
Findfast - findfast.cpl
Folders Properties - control folders
Fonts - control fonts
Fonts Folder - fonts
Free Cell Card Game - freecell
Game Controllers - joy.cpl
Group Policy Editor (XP Prof) - gpedit.msc
Hearts Card Game - mshearts
Iexpress Wizard - iexpress
Indexing Service - ciadv.msc
Internet Properties - inetcpl.cpl
IP Configuration (Display Connection Configuration) - ipconfig /all
IP Configuration (Display DNS Cache Contents) - ipconfig /displaydns
IP Configuration (Delete DNS Cache Contents) - ipconfig /flushdns
IP Configuration (Release All Connections) - ipconfig /release
IP Configuration (Renew All Connections) - ipconfig /renew
IP Configuration (Refreshes DHCP & Re-Registers DNS) - ipconfig /registerdns
IP Configuration (Display DHCP Class ID) - ipconfig /showclassid
IP Configuration (Modifies DHCP Class ID) - ipconfig /setclassid
Java Control Panel (If Installed) - jpicpl32.cpl
Java Control Panel (If Installed) - javaws
Keyboard Properties - control keyboard
Local Security Settings - secpol.msc
Local Users and Groups - lusrmgr.msc
Logs You Out Of Windows - logoff
Microsoft Chat - winchat
Minesweeper Game - winmine
Mouse Properties - control mouse
Mouse Properties - main.cpl
Network Connections - control netconnections
Network Connections - ncpa.cpl
Network Setup Wizard - netsetup.cpl
Notepad - notepad
Nview Desktop Manager (If Installed) - nvtuicpl.cpl
Object Packager - packager
ODBC Data Source Administrator - odbccp32.cpl
On Screen Keyboard - osk
Opens AC3 Filter (If Installed) - ac3filter.cpl
Password Properties - password.cpl
Performance Monitor - perfmon.msc
Performance Monitor - perfmon
Phone and Modem Options - telephon.cpl
Power Configuration - powercfg.cpl
Printers and Faxes - control printers
Printers Folder - printers
Private Character Editor - eudcedit
Quicktime (If Installed) - QuickTime.cpl
Regional Settings - intl.cpl
Registry Editor - regedit
Registry Editor - regedit32
Remote Desktop - mstsc
Removable Storage - ntmsmgr.msc
Removable Storage Operator Requests - ntmsoprq.msc
Resultant Set of Policy (XP Prof) - rsop.msc
Scanners and Cameras - sticpl.cpl
Scheduled Tasks - control schedtasks
Security Center - wscui.cpl
Services - services.msc
Shared Folders - fsmgmt.msc
Shuts Down Windows - shutdown
Sounds and Audio - mmsys.cpl
Spider Solitare Card Game - spider
SQL Client Configuration - cliconfg
System Configuration Editor - sysedit
System Configuration Utility - msconfig
System File Checker Utility (Scan Immediately) - sfc /scannow
System File Checker Utility (Scan Once At Next Boot) - sfc /scanonce
System File Checker Utility (Scan On Every Boot) - sfc /scanboot
System File Checker Utility (Return to Default Setting) - sfc /revert
System File Checker Utility (Purge File Cache) - sfc /purgecache
System File Checker Utility (Set Cache Size to size x) - sfc /cachesize=x
System Properties - sysdm.cpl
Task Manager - taskmgr
Telnet Client - telnet
User Account Management - nusrmgr.cpl
Utility Manager - utilman
Windows Firewall - firewall.cpl
Windows Magnifier - magnify
Windows Management Infrastructure - wmimgmt.msc
Windows System Security Tool - syskey
Windows Update Launches - wupdmgr
Windows XP Tour Wizard - tourstart
Wordpad - write