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  2. Process control block - Wikipedia

    en.wikipedia.org/wiki/Process_control_block

    The process id is particularly relevant since it is often used to cross-reference the tables defined above, e.g. showing which process is using which I/O devices, or memory areas. Process state data define the status of a process when it is suspended, allowing the OS to restart it later. This always includes the content of general-purpose CPU ...

  3. Functional flow block diagram - Wikipedia

    en.wikipedia.org/wiki/Functional_flow_block_diagram

    The first structured method for documenting process flow, the flow process chart, was introduced by Frank Gilbreth to members of American Society of Mechanical Engineers (ASME) in 1921 as the presentation “Process Charts—First Steps in Finding the One Best Way”. [5] Gilbreth's tools quickly found their way into industrial engineering ...

  4. Embedded software - Wikipedia

    en.wikipedia.org/wiki/Embedded_software

    Embedded software is computer software, written to control machines or devices that are not typically thought of as computers, commonly known as embedded systems. It is typically specialized for the particular hardware that it runs on and has time and memory constraints. [1] This term is sometimes used interchangeably with firmware. [2]

  5. Residual-current device - Wikipedia

    en.wikipedia.org/wiki/Residual-current_device

    A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...

  6. Load line (electronics) - Wikipedia

    en.wikipedia.org/wiki/Load_line_(electronics)

    Once a DC operating point is defined by the DC load line, an AC load line can be drawn through the Q point. The AC load line is a straight line with a slope equal to the AC impedance facing the nonlinear device, which is in general different from the DC resistance. The ratio of AC voltage to current in the device is defined by this line.

  7. Devicetree - Wikipedia

    en.wikipedia.org/wiki/Devicetree

    In computing, a devicetree (also written device tree) is a data structure describing the hardware components of a particular computer so that the operating system's kernel can use and manage those components, including the CPU or CPUs, the memory, the buses and the integrated peripherals.

  8. Extra-low voltage - Wikipedia

    en.wikipedia.org/wiki/Extra-low_voltage

    Examples for FELV circuits include those that generate an extra low voltage through a semiconductor device or a potentiometer or an autotransformer. A typical example is an electronically controlled toaster where the electronic timer circuit runs off an extra low voltage derived from a tap on the heating element .

  9. Power distribution unit - Wikipedia

    en.wikipedia.org/wiki/Power_distribution_unit

    A power distribution unit (PDU) is a device fitted with multiple outputs designed to distribute electric power, especially to racks of computers and networking equipment located within a data center. [1] Data centers face challenges in power protection and management solutions.