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  2. Central processing unit - Wikipedia

    en.wikipedia.org/wiki/Central_processing_unit

    A CPU cache [71] is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory. A cache is a smaller, faster memory, closer to a processor core, which stores copies of the data from frequently used main memory locations.

  3. Processor (computing) - Wikipedia

    en.wikipedia.org/wiki/Processor_(computing)

    In computing and computer science, a processor or processing unit is an electrical component (digital circuit) that performs operations on an external data source, usually memory or some other data stream. [1]

  4. Control unit - Wikipedia

    en.wikipedia.org/wiki/Control_unit

    The control unit (CU) is a component of a computer's central processing unit (CPU) that directs the operation of the processor. A CU typically uses a binary decoder to convert coded instructions into timing and control signals that direct the operation of the other units (memory, arithmetic logic unit and input and output devices, etc.).

  5. Computer hardware - Wikipedia

    en.wikipedia.org/wiki/Computer_hardware

    At least one CPU (central processing unit), which performs most of the calculations that enable a computer to function. [49] It can be informally referred to as the brain of the computer. [ 50 ] It takes program instructions from random-access memory (RAM), interprets and processes them and then sends back results so that the relevant ...

  6. Control bus - Wikipedia

    en.wikipedia.org/wiki/Control_bus

    In computer architecture, a control bus is part of the system bus and is used by CPUs for communicating with other devices within the computer. While the address bus carries the information about the device with which the CPU is communicating and the data bus carries the actual data being processed, the control bus carries commands from the CPU and returns status signals from the devices.

  7. Processor register - Wikipedia

    en.wikipedia.org/wiki/Processor_register

    A processor register is a quickly accessible location available to a computer's processor. [1] Registers usually consist of a small amount of fast storage, although some registers have specific hardware functions, and may be read-only or write-only.

  8. Microprocessor - Wikipedia

    en.wikipedia.org/wiki/Microprocessor

    A microprocessor is a computer processor for which the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs. The microprocessor contains the arithmetic, logic, and control circuitry required to perform the functions of a computer's central processing unit (CPU).

  9. Computer architecture - Wikipedia

    en.wikipedia.org/wiki/Computer_architecture

    Block diagram of a basic computer with uniprocessor CPU. Black lines indicate control flow, whereas red lines indicate data flow. Arrows indicate the direction of flow. In computer science and computer engineering, computer architecture is a description of the structure of a computer system made from component parts. [1]