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  2. Programmable interval timer - Wikipedia

    en.wikipedia.org/wiki/Programmable_Interval_Timer

    Timer 0 is used by Microsoft Windows (uniprocessor) and Linux as a system timer, timer 1 was historically used for dynamic random access memory refreshes and timer 2 for the PC speaker. [2] The LAPIC in newer Intel systems offers a higher-resolution (one microsecond) timer. [3]

  3. "Hello, World!" program - Wikipedia

    en.wikipedia.org/wiki/"Hello,_World!"_program

    A "Hello, World!"program is usually a simple computer program that emits (or displays) to the screen (often the console) a message similar to "Hello, World!".A small piece of code in most general-purpose programming languages, this program is used to illustrate a language's basic syntax.

  4. Codecademy - Wikipedia

    en.wikipedia.org/wiki/Codecademy

    Code Year was a free incentive Codecademy program intended to help people follow through on a New Year's Resolution to learn how to program, by introducing a new course for every week in 2012. [32] Over 450,000 people took courses in 2012, [33] [34] and Codecademy continued the program into 2013. Even though the course is still available, the ...

  5. C (programming language) - Wikipedia

    en.wikipedia.org/wiki/C_(programming_language)

    The code generated after compilation does not demand many system features, and can be invoked from some boot code in a straightforward manner – it is simple to execute. The C language statements and expressions typically map well on to sequences of instructions for the target processor, and consequently there is a low run-time demand on ...

  6. System time - Wikipedia

    en.wikipedia.org/wiki/System_time

    Critical and Significant Dates, J. R. Stockton (retrieved 3 December 2015) The Boost Date/Time Library (C++) The Boost Chrono Library (C++) The Chronos Date/Time Library (Smalltalk) Joda Time, The Joda Date/Time Library (Java) The Perl DateTime Project Archived 2009-02-19 at the Wayback Machine (Perl) date: Ruby Standard Library Documentation ...

  7. Compile-time function execution - Wikipedia

    en.wikipedia.org/wiki/Compile-time_function...

    The Metacode extension to C++ (Vandevoorde 2003) [1] was an early experimental system to allow compile-time function evaluation (CTFE) and code injection as an improved syntax for C++ template metaprogramming. In earlier versions of C++, template metaprogramming is often used to compute values at compile time, such as:

  8. Advanced Programmable Interrupt Controller - Wikipedia

    en.wikipedia.org/wiki/Advanced_Programmable...

    The aperiodic interrupts offered by the APIC timer are used by the Linux kernel tickless kernel feature. This optional but default feature is new with 2.6.18. When enabled on a computer with an APIC timer, the kernel does not use the 8253 programmable interval timer for timekeeping. [12]

  9. Bounds checking - Wikipedia

    en.wikipedia.org/wiki/Bounds_checking

    In computer programming, bounds checking is any method of detecting whether a variable is within some bounds before it is used. It is usually used to ensure that a number fits into a given type (range checking), or that a variable being used as an array index is within the bounds of the array (index checking).