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  2. PS/2 port - Wikipedia

    en.wikipedia.org/wiki/PS/2_port

    The PS/2 port is a 6-pin mini-DIN connector used for connecting keyboards and mice to a PC compatible computer system. Its name comes from the IBM Personal System/2 series of personal computers, with which it was introduced in 1987. The PS/2 mouse connector generally replaced the older DE-9 RS-232 "serial mouse" connector, while the PS/2 ...

  3. Computer keyboard - Wikipedia

    en.wikipedia.org/wiki/Computer_keyboard

    Typing on a laptop keyboard. A computer keyboard is a peripheral input device modeled after the typewriter keyboard [ 1][ 2] which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches. Replacing early punched cards and paper tape technology, interaction via teleprinter -style keyboards have been the main ...

  4. Computer port (hardware) - Wikipedia

    en.wikipedia.org/wiki/Computer_port_(hardware)

    Computer port (hardware) A computer port is a hardware piece on a computer where an electrical connector can be plugged to link the device to external devices, such as another computer, a peripheral device or network equipment. [ 1] This is a non-standard term. Electronically, the several conductors where the port and cable contacts connect ...

  5. Computer hardware - Wikipedia

    en.wikipedia.org/wiki/Computer_hardware

    Computer hardware. PDP-11 CPU board. Computer hardware includes the physical parts of a computer, such as the central processing unit (CPU), random access memory (RAM), motherboard, computer data storage, graphics card, sound card, and computer case. It includes external devices such as a monitor, mouse, keyboard, and speakers. [ 1][ 2]

  6. Keyboard technology - Wikipedia

    en.wikipedia.org/wiki/Keyboard_technology

    The technology of computer keyboards includes many elements. Many different keyboard technologies have been developed for consumer demands and optimized for industrial applications. The standard full-size (100%) computer alphanumeric keyboard typically uses 101 to 105 keys; keyboards integrated in laptop computers are typically less comprehensive.

  7. MIDI - Wikipedia

    en.wikipedia.org/wiki/MIDI

    MIDI ( / ˈmɪdi /; Musical Instrument Digital Interface) is a technical standard that describes a communication protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and related audio devices for playing, editing, and recording music.

  8. Input/output - Wikipedia

    en.wikipedia.org/wiki/Input/output

    v. t. e. In computing, input/output ( I/O, i/o, or informally io or IO) is the communication between an information processing system, such as a computer, and the outside world, such as another computer system, peripherals, or a human operator. Inputs are the signals or data received by the system and outputs are the signals or data sent from it.

  9. Keyboard computer - Wikipedia

    en.wikipedia.org/wiki/Keyboard_computer

    Keyboard computer. A keyboard computer is a computer which contains all of the regular components of a personal computer, except for a screen, in the same housing as the keyboard. The power supply is typically external and connects to the computer via an adapter cable. The motherboard is specially designed to fit inside, and the device is ...