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Wednesday, July 20, 2011

What are Different Types of Computer Hardware

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What is Hardware?
The physical parts of a computer are called hardware. Hardware can be touched or seen by us. For example, hard disk, mouse, keyboard, CD, CD-ROM Drive, Floppy Disk, Speakers, Modem and Printers - all are computer hardware.
Explain different types of computer hardware with pictures
Explain different types of computer hardware


Different types of hardware components on the basis of the functionality 

they provide are as follows:


1.    Input devices

Input devices are used to enter data and instructions into computer. Examples of input devices are:
Keyboard, mouse, scanner, digital camera etc.
Microphone

Mouse

Keyboard



2.    The Central Processing unit
Central processing unit is the brain of the computer. It is also called CPU or Processor. Intel is the leading manufacturer of microprocessors. For example, Intel Pentium IV 3.2 MHz is an example of a CPU. You can see the images of processors / Micro processors or CPUs.
Images of CPU or Microprocessor or simply Processor - Types of computer Hardware
Images of CPU or Microprocessor or simply Processor

3.    Output devices
 Output devices are used to show the results of processing to the user. For example monitor, printer, plotter, speaker and data projector are out put devices.
Speakers - Computer Hardware Component
Speakers





Monitor - Computer Hardware Component
LCD Monitor


Printer - Computer Hardware Component
Printer


4.    Memory chips
Memory is a component of a computer to store data and instructions. RAM is an example of memory chip. It stands for Random Access Memory. Every program to be executed is loaded in RAM from hard disk. CPU executes the programs loaded in RAM.RAM is a temporary memory, all data and programs are lost from RAM, when computer is turned off. ROM stands for Read Only Memory. ROM is permanent memory chip; we cannot change or delete its contents. It is a non-volatile memory.
Picture of ROM in Computer Mother Board
ROM shape 1

Picture of ROM in Computer Mother Board
RAM

ROM shape 2

5.    Storage devices
Storage Devices are used to store large amounts of data permanently. For example: hard disk, CD, DVD etc. are storage devices. Moreover, Zip Disk and Floppy disk is also considered as storage devices.
Picture of Hard Disk
Hard Disk

Picture of DVD
DVD ROM

Picture of Floppy disk - Computer hardware components
Floppy Disk

Picture of Zip disk
ZIP Disk

Picture of CD ROM
CD ROM
 6.    Communication devices
Communication devices are used to send and receive data from one computer to another. For example Modem, Network Interface Card, Hub, switches, routers, gateways and even networking cables are included in communication devices
Wireless LAN Card
Wireless PCI NIC Card

External Modem - Computer Hardware Components
External Modem
Linksys Router - Types of computer Hardware
LinkSys Router

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