CONCEPT OF HARDWARE AND SOFTWARE
Computer system is the combination of hardware and software. Hardware are components of the Computer System; physical, Tangible pieces that we can see and touch. Software is set of programs (which are step by step instructions) telling the Computer how to process data.
Hardware:- Hardware is a comprehensive term for all of the physical parts of a computer, as distinguished from the data it contains or operates on, and the software that provides instructions for the hardware to acoomplish tasks. The boundary between hardware and software is connected through firmware software that is built-in to the hardware, but such firmware is usually the province of computer programmers and computer engineers in any case and issue that computer users need to concern themselves with.
A computer (Personal Computer as a desktop) contains the following parts:-
- Motherboard- which holds the CPU, main memory and other parts, and has slots for expansion cards.
- Power supply- a case that holds a transformer, voltage control and fan.
- Storage controllers, of IDE, SCSI or other type, that control hard disk, floppy disk, CD-ROM and other drives; the controllers sit directly on the motherboard (on-board) or on expansion cards.
- Graphics controller that produces the output for the monitor
- The hard disk, floppy disk and other drives for mass storage
- Interface controllers (parallel, serial, USB, Firewire) to connect to computer to external peripheral devices such as printers or scanners.
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