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  2. List of dialling codes in Pakistan - Wikipedia

    en.wikipedia.org/wiki/List_of_dialling_codes_in...

    The area codes in Pakistan consists of two to five digits; generally smaller the city, longer the prefix. All large cities have two-digit codes. The smaller towns might have six digital whereas big cities have seven digit numbers. Azad Kashmir telephone lines contain five digits. On 1 July 2009, telephone numbers in Karachi and Lahore were ...

  3. List of hash functions - Wikipedia

    en.wikipedia.org/wiki/List_of_hash_functions

    32 or 64 bits XOR/addition Bernstein's hash djb2: 32 or 64 bits shift/add or mult/add or shift/add/xor or mult/xor PJW hash / Elf Hash: 32 or 64 bits add,shift,xor MurmurHash: 32, 64, or 128 bits product/rotation Fast-Hash: 32 or 64 bits xorshift operations SpookyHash 32, 64, or 128 bits see Jenkins hash function: CityHash: 32, 64, 128, or 256 bits

  4. List of ISO 3166 country codes - Wikipedia

    en.wikipedia.org/wiki/List_of_ISO_3166_country_codes

    See the ISO 3166-3 standard for former country codes. British Virgin Islands – See Virgin Islands (British) . Burma – See Myanmar . Cape Verde – See Cabo Verde . Caribbean Netherlands – See Bonaire, Sint Eustatius and Saba . China, The Republic of – See Taiwan (Province of China) . Democratic People's Republic of Korea – See Korea ...

  5. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Zone 8 uses four 2-digit codes (81, 82, 84, 86) and four sets of 3-digit codes (80x, 85x, 87x, 88x) to serve East Asia, South Asia and special services. 83x and 89x are unallocated. Zone 9 uses seven 2-digit codes (90–95, 98) and three sets of 3-digit codes (96x, 97x, 99x) to serve the Middle East , West Asia , Central Asia , parts of South ...

  6. Trellis coded modulation - Wikipedia

    en.wikipedia.org/wiki/Trellis_coded_modulation

    Today, the most common trellis-modulated V.34 modems use a 4-dimensional set partition—achieved by treating two two-dimensional symbols as a single lattice. This set uses 8, 16, or 32 state convolutional codes to squeeze the equivalent of 6 to 10 bits into each symbol the modem sends (for example, 2,400 baud × 8 bits/symbol = 19,200 bit/s).

  7. 64-bit computing - Wikipedia

    en.wikipedia.org/wiki/64-bit_computing

    A 64-bit word can be expressed as a sequence of 16 hexadecimal digits. In computer architecture, 64-bit integers, memory addresses, or other data units [a] are those that are 64 bits wide. Also, 64-bit central processing units (CPU) and arithmetic logic units (ALU) are those that are based on processor registers, address buses, or data buses of ...

  8. List of named passenger trains of Pakistan - Wikipedia

    en.wikipedia.org/wiki/List_of_named_passenger...

    Pakistan Express: PR: Karachi Cantonment – Rawalpindi: 2006 – Present 45UP/46DN Pakpattan Express PR: Pakpattan - Samasata Junction: Suspended - Pind Dadan Khan Shuttle: PR: Malakwal Junction – Pind Dadan Khan: 2015 – Present 1UP/2DN Qalander Express PR: Larkana Junction - Karachi Cantonment: Suspended 165UP/166DN Ravi Express: S. Jamil ...

  9. 64b/66b encoding - Wikipedia

    en.wikipedia.org/wiki/64b/66b_encoding

    The overhead of 64b/66b encoding is 2 coding bits for every 64 payload bits or 3.125%. This is a considerable improvement on the 25% overhead of the previously-used 8b/10b encoding scheme, which added 2 coding bits to every 8 payload bits. The overhead can be reduced further by doubling the payload size to produce the 128b/130b encoding used by ...