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Tuesday, 30 April 2013

Hardware And Software



Hardware
Hardware of a computer is the tangible contents or components connected to the computer directly or indirectly. Example; Key Board, Mouse, Monitor, Ram, Hard disk etc…..
Software
Software is a set of instructions. This contains the information about how to work. And what to do with the hardware components
Normally a computer can work without software. But the computer can’t do most of the tasks without software. And the software has been divided in to three sections
1) System software
2) Application software
3) Embedded software
1) System Software
System software is commonly known as Operating System (OS). As like the name it was instructing the computer’s hardware part for work. It makes a computer more user friendly. It acts as a interpreter between user and computer.
Examples: Microsoft Windows XP, Windows 7, Windows 8, UBUNDU, Fedora, etc…
2) Application Software
Application software is used for the computer to do specified tasks. Such as opening a specified file, playing music files etc…
An application needs a plat form of operating system to function.
Examples: adobe reader, vlc player, Microsoft Office, etc…..
3) Embedded software
Embedded software is used in the computer peripherals which are not a real computer. And that devices doesn't have an OS. But these devices should have to store time, date etc… And also should work well with these instructions. And It also known as “Firmware”.
Example for the devices are firmware: External firewalls, modems, and computer CMOS etc…