Hardware
Hardware consists of all the machinery and equipment in a computer system. It includes the keyboard, the monitor, the printer and the computer or processing device itself.
In general computer hardware is categorized according to the operations it performs:
Devices that are connected to the main computer cabinet are referred to as peripheral devices. A peripheral device is any piece of hardware that is connected to a computer. The examples are the keyboard, the mouse, the monitor and printer. An input hardware consists of devices that allow people to put data into the computer in a form that a computer can use, For example, an input may be by means of a keyboard, mouse, microphone, or scanner.
In general computer hardware is categorized according to the operations it performs:
Devices that are connected to the main computer cabinet are referred to as peripheral devices. A peripheral device is any piece of hardware that is connected to a computer. The examples are the keyboard, the mouse, the monitor and printer. An input hardware consists of devices that allow people to put data into the computer in a form that a computer can use, For example, an input may be by means of a keyboard, mouse, microphone, or scanner.
The system unit, or system cabinet, houses the electronic circuitry called the CPU (Central Processing Unit), which performs actual processing and main memory supports processing. The CPU is the computing part of the computer. It controls and manipulates data to produce information, In a personal computer, the CPU is usually a single, fingernail size chip called microprocessor, with electronic circuits printed on it. This microprocessor and other components necessary to make it work are mounted on a main circuit board called a motherboard.
Memory also known as main memory, RAM (Random Access Memory) or primary storage is a working storage. Memory is the computer's workspace, where data and programs for immediate processing are held. Computer memory is-contained on memory chips mounted on the motherboard. Memory capacity is important because it determines how much data can be processed at a time.
Output hardware consists of devices that translate the information processed by the computer into a form that humans can understand. As a personal computer user, you will be dealing with three principal types of output hardware - monitors, printers and other output devices. The monitor is the display unit of a computer. A printer is a device that converts computer output into printed images. Sound processors and speakers can produce digital music or human-like speech.
Secondary Storage hardware consists of devices that store data and programs permanently on a disk, tape or other media,
Media refers to the material that stores data such as a disk or, magnetic tape. For microcomputer, the principal storage media are diskette (floppy disk), hard disk, magnetic tape and CD-ROM.
Media refers to the material that stores data such as a disk or, magnetic tape. For microcomputer, the principal storage media are diskette (floppy disk), hard disk, magnetic tape and CD-ROM.
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