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  2. Break key - Wikipedia

    en.wikipedia.org/wiki/Break_key

    Break/Pause key on PC keyboard. The Break key (or the symbol ⎉) of a computer keyboard refers to breaking a telegraph circuit and originated with 19th century practice. In modern usage, the key has no well-defined purpose, but while this is the case, it can be used by software for miscellaneous tasks, such as to switch between multiple login sessions, to terminate a program, or to interrupt ...

  3. Exception handling (programming) - Wikipedia

    en.wikipedia.org/wiki/Exception_handling...

    The boolean local variables are initialized to False at the start. If send_fast fails, the body (do clause) will be executed again, causing execution of send_slow. If this execution of send_slow fails, the rescue clause will execute to the end with no retry (no else clause in the final if), causing the routine execution as a whole to fail.

  4. Interrupt - Wikipedia

    en.wikipedia.org/wiki/Interrupt

    A hardware interrupt is a condition related to the state of the hardware that may be signaled by an external hardware device, e.g., an interrupt request (IRQ) line on a PC, or detected by devices embedded in processor logic (e.g., the CPU timer in IBM System/370), to communicate that the device needs attention from the operating system (OS) [7] or, if there is no OS, from the bare metal ...

  5. System request - Wikipedia

    en.wikipedia.org/wiki/System_request

    A 104-key PC US English keyboard layout with System request circled. System Request (SysRq or Sys Req) is a key on personal computer keyboards that has no standard use. Introduced by IBM with the PC/AT, it was intended to be available as a special key to directly invoke low-level operating system functions with no possibility of conflicting with any existing software.

  6. Twisted (software) - Wikipedia

    en.wikipedia.org/wiki/Twisted_(software)

    Twisted was used in the Omegle one-on-one chat service [7] until it was replaced with gevent for performance reasons. [8] The Apple Calendar Server uses Twisted, [9] as do some internal projects of NASA. Conch, an implementation of the Secure Shell (SSH) protocol; The original version of social networking and microblogging site Jaiku used Twisted.

  7. Execution (computing) - Wikipedia

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

    Execution in computer and software engineering is the process by which a computer or virtual machine interprets and acts on the instructions of a computer program.Each instruction of a program is a description of a particular action which must be carried out, in order for a specific problem to be solved.

  8. Machine-check exception - Wikipedia

    en.wikipedia.org/wiki/Machine-check_exception

    The installation can print those data using the Environmental Record Editing and Printing Program (EREP) service aid or the stand-alone version SEREP. The MCH can handle memory failures in refreshable nucleus control sections by reading a fresh copy from SYS1.ASRLIB and can handle memory errors in SVC transient areas by reading a fresh copy of ...

  9. Button (computing) - Wikipedia

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

    Different types of buttons in GTK. In computing, a button (sometimes known as a command button or push button) is a graphical control element that provides the user a simple way to trigger an event, like searching for a query at a search engine, or to interact with dialog boxes, like confirming an action. [1]