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  2. Halt and Catch Fire (computing) - Wikipedia

    en.wikipedia.org/wiki/Halt_and_Catch_Fire...

    The Motorola 6800 microprocessor was the first for which an undocumented assembly mnemonic HCF became widely known. The operation codes (opcodes—the portions of the machine language instructions that specify an operation to be performed) hexadecimal 9D and DD were reported and given the unofficial mnemonic HCF in a December 1977 article by Gerry Wheeler in BYTE magazine on undocumented ...

  3. MATLAB - Wikipedia

    en.wikipedia.org/wiki/MATLAB

    MATLAB (an abbreviation of "MATrix LABoratory" [18]) is a proprietary multi-paradigm programming language and numeric computing environment developed by MathWorks.MATLAB allows matrix manipulations, plotting of functions and data, implementation of algorithms, creation of user interfaces, and interfacing with programs written in other languages.

  4. Hang (computing) - Wikipedia

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

    February 2023) (Learn how and when to remove this message) In computing , a hang or freeze occurs when either a process or system ceases to respond to inputs . A typical example is when computer's graphical user interface (such as Microsoft Windows [ a ] ) no longer responds to the user typing on the keyboard or moving the mouse.

  5. Preemption (computing) - Wikipedia

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

    With the advent of interrupts and preemptive multitasking, these I/O bound processes could be "blocked", or put on hold, pending the arrival of the necessary data, allowing other processes to utilize the CPU. As the arrival of the requested data would generate an interrupt, blocked processes could be guaranteed a timely return to execution.

  6. Lazy evaluation - Wikipedia

    en.wikipedia.org/wiki/Lazy_evaluation

    In many other languages, evaluation can be delayed by explicitly suspending the computation using special syntax (as with Scheme's "delay" and "force" and OCaml's "lazy" and "Lazy.force") or, more generally, by wrapping the expression in a thunk. The object representing such an explicitly delayed evaluation is called a lazy future.

  7. Exception handling - Wikipedia

    en.wikipedia.org/wiki/Exception_handling

    Social pressure is a major influence on the scope of exceptions and use of exception-handling mechanisms, i.e. "examples of use, typically found in core libraries, and code examples in technical books, magazine articles, and online discussion forums, and in an organization’s code standards". [10]

  8. Exit status - Wikipedia

    en.wikipedia.org/wiki/Exit_status

    In computing, the exit status (also exit code or exit value) of a terminated process is an integer number that is made available to its parent process (or caller). In DOS , this may be referred to as an errorlevel .

  9. HLT (x86 instruction) - Wikipedia

    en.wikipedia.org/wiki/HLT_(x86_instruction)

    All x86 processors from the 8086 onward had the HLT instruction, but it was not used by MS-DOS prior to 6.0 [2] and was not specifically designed to reduce power consumption until the release of the Intel DX4 processor in 1994. MS-DOS 6.0 provided a POWER.EXE that could be installed in CONFIG.SYS and in Microsoft's tests it saved 5%. [3]