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Computer Tech

A USB flash drive is a flash memory data storage device that is integrated with a Universal Serial Bus. USB flash drives are most often removable and rewritable, and are much smaller than other portable storage devices. They are usually used for simila...

The Universal Serial Bus (USB) was designed to establish communication between devices and a host computer and is intended to replace many types of serial and parallel ports. The Universal Serial Bus (USB) is a standard for peripheral devices that bega...

A computer terminal is an electromechanical hardware device that is used for entering data into a computer and displaying it. Although the first terminals were cost efficient, they were very slow compared to punched cards for input. As the technology e...

A touchpad is a pointing device that is made of a specialized surface that can translate the motion and position of a user's fingers to a comparative position on screen. They are most commonly found in laptop computers, but are also used as substitutes...

Computer software is the collection of computer programs and related data that give the instructions to a computer. Different from hardware, software is intangible, which means that it cannot be touched. Some examples of computer software include: word...

A server is a program that functions as a socket listener. The term server can also be used to generally describe a host that is positioned to carry out one or more such programs. A server functions as either sole-operating software, or one or series o...

A tape drive is a storage device that reads and writes data on a magnetic tape. It is mostly used for offline, archival data storage. Tape media is generally cost efficient and has a long archival strength. In contrast to a disk drive which provides...

Read only memory, or ROM, is a type of storage media that is used by computers and other electronic devices. The data stored in ROM cannot be modified, therefore it is largely used to distribute firmware. The most straightforward type of ROM is about ...

Random access memory (RAM) is a form of computer data storage that takes the form of integrated circuits in order to allow stored data to be accessed in any order. Random refers to the idea that any piece of data can be restored in a constant time, reg...

RAID is an acronym that stands for "redundant array of independent disks". It is a technology that is geared to provide greater storage reliability by combining numerous low-cost, less-reliable disk drive components into a reasonable unit where all dri...

A peripheral is a piece of equipment that is attached to a host computer without being a part of it and is instead dependent on the host. It broadens the capabilities of the host, but does not form part of the core computer architecture. Common example...

An optical disc drive is a disk drive that utilizes electromagnetic waves or a laser light near the light spectrum in order to read and write data to or from optical discs. Some drives can only read from discs; however, most recent drives are generally...

A network is a group of computers and devices that are interconnected by communications channels. These channels facilitate communications among users and allow them to share resources. Many different characteristics can be used to classify a network. ...

A personal computer, or PC, refers to any general-purpose computer whose size, capabilities, and selling price make it useful for individuals, and is intended to be managed directly by a user with no superseding operator. Examples of personal computers...

A motherboard is the central printed circuit board in most modern computers and holds many of the vital components of the system as well as provides connectors for other peripherals. Before the microprocessor was introduced, computers were usually ma...

A monitor (also referred to as a visual display unit) is an electronic visual display for computers. The monitor encompasses the display device, circuitry, and an enclosure. The display device in contemporary monitors is usually a thin film transistor ...

In computing, memory applies to the state information of a computing system because it is kept active in some physical structure. The term "memory" is used for the fast information in physical systems, as a distinction from physical systems which are s...

In relation to computing, a mouse is a pointing device that operates by detecting two-dimensional motion that is relative to the surface that supports it. Typically a mouse is an object held under the user's hand. It may have one or more buttons or whe...

A keyboard is an arrangement of buttons or keys that act as mechanical levers or electronic switches to input data into computers. Despite the development of alternative input devices, the keyboard is still the most commonly used and most versatile dev...

Input/output, commonly known as I/O, is the communication that goes on between a information processing system and the outside world, which may be a person or another information processing system. The signals and data received by the system are known ...