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  2. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.

  3. The Code Book - Wikipedia

    en.wikipedia.org/wiki/The_Code_Book

    The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography is a book by Simon Singh, published in 1999 by Fourth Estate and Doubleday. The Code Book describes some illustrative highlights in the history of cryptography , drawn from both of its principal branches, codes and ciphers .

  4. Android Donut - Wikipedia

    en.wikipedia.org/wiki/Android_Donut

    Android Donut. Android 1.6 Donut is the fourth version of the open source Android mobile operating system developed by Google. Among the more prominent features introduced with this update were added support for CDMA smartphones, additional screen sizes, a battery usage indicator, and a text-to-speech engine. [3]

  5. 3 GB barrier - Wikipedia

    en.wikipedia.org/wiki/3_GB_barrier

    In computing, the term 3 GB barrier refers to a limitation of some 32-bit operating systems running on x86 microprocessors. It prevents the operating systems from using all of 4 GiB ( 4 × 10243 bytes) of main memory. [1] The exact barrier varies by motherboard and I/O device configuration, particularly the size of video RAM; it may be in the ...

  6. Bitwise operation - Wikipedia

    en.wikipedia.org/wiki/Bitwise_operation

    Bitwise operation. In computer programming, a bitwise operation operates on a bit string, a bit array or a binary numeral (considered as a bit string) at the level of its individual bits. It is a fast and simple action, basic to the higher-level arithmetic operations and directly supported by the processor.

  7. Year 2038 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2038_problem

    The year 2038 problem (also known as Y2038, [1] Y2K38, Y2K38 superbug or the Epochalypse [2] [3]) is a time computing problem that leaves some computer systems unable to represent times after 03:14:07 UTC on 19 January 2038. The problem exists in systems which measure Unix time —the number of seconds elapsed since the Unix epoch (00:00:00 UTC ...

  8. 16bit Sensation - Wikipedia

    en.wikipedia.org/wiki/16bit_Sensation

    16bit Sensation: Watashi to Minna ga Tsukutta Bishōjo Game (Japanese: 16bitセンセーション 私とみんなが作った美少女ゲーム, Hepburn: Jūroku Bitto Sensēshon Watashi to Minna ga Tsukutta Bishōjo Gēmu, "16bit Sensation: The Bishōjo Game Made by All of You and I") is a Japanese manga conceptualized by Misato Mitsumi, Tatsuki Amazuyu, and Tamiki Wakaki and illustrated by ...

  9. Bitwise operations in C - Wikipedia

    en.wikipedia.org/wiki/Bitwise_operations_in_C

    1. 1. 1. The bitwise AND operator is a single ampersand: &. It is just a representation of AND which does its work on the bits of the operands rather than the truth value of the operands. Bitwise binary AND performs logical conjunction (shown in the table above) of the bits in each position of a number in its binary form.