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Computer Hardware

Computer Hardware Computer hardware  is the physical parts or components of a computer, such as the  monitor ,  keyboard ,  computer data storage ,  graphic card ,  sound card  and  motherboard . [1]  By contrast,  software  is instructions that can be stored and ran by hardware. Hardware is directed by the  software  to execute any command or  instruction . A combination of hardware and software forms a usable  computing  system. Different systems There are a number of different types of computer system in use today. Personal computer Basic hardware components of a modern personal computer, including a  monitor , a  motherboard , a  CPU , a  RAM , two  expansion cards , a  power supply , an  optical disc drive , a  hard disk drive , a  keyboard  and a  mouse Inside a custom-built computer: power supply at the bottom has its ow...
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Computer Softwares

Softwares Computer software , or simply  software , is a part of a  computer system  that consists of  data  or computer instructions, in contrast to the  physical hardware  from which the system is built. In  computer science  and  software engineering , computer software is all  information processed by  computer systems ,  programs  and data. Computer software includes  computer programs ,  libraries  and related non-executable  data , such as  online documentation  or  digital media . Computer hardware and software require each other and neither can be realistically used on its own. At the lowest level,  executable code  consists of  machine language instructions  specific to an individual  processor —typically a  central processing unit  (CPU). A machine language consists of groups of  binary values  signifying processor ins...
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Output device: An output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. For example, the image shows an inkjet printer, an output device that can make a hard copy of any information shown on your monitor. Another example of an output device is a computer monitor, which displays an image that is received from the computer. Monitors and printers are two of the most common output devices used with a computer. Types of output devices: The following list contains many different output devices. For further information, select any of the listings with blue text. 3D Printer Braille embosser Braille reader Flat panel GPS Headphones Computer Output Microfilm (COM) Monitor Plotter Printer ( Dot matrix printer , Inkjet printer , and Laser printer ) Projector Sound card Speakers Speech-generating device (SGD) TV Video card Following are few of the important output devices whic...
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Input Devices

Input device: In computing , an input device is a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or information appliance . Examples of input devices include keyboards , mouse , scanners , digital cameras and joysticks . Many input devices can be classified according to: modality of input (e.g. mechanical motion, audio, visual, etc.) whether the input is discrete (e.g. pressing of key) or continuous (e.g. a mouse's position, though digitized into a discrete quantity, is fast enough to be considered continuous) the number of degrees of freedom involved (e.g. two-dimensional traditional mice, or three-dimensional navigators designed for CAD applications) Pointing devices , which are input devices used to specify a position in space, can further be classified according to: Whether the input is direct or indirect. With direct input, the input space coincides with ...
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