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  2. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  3. Register machine - Wikipedia

    en.wikipedia.org/wiki/Register_machine

    An exception to this is the abacus [4] [3] counter machine models—every instruction has at least one "next" instruction identifier "z", and the conditional branch has two. Observe also that the abacus model combines two instructions, JZ then DEC: e.g. { INC ( r, z ), JZDEC ( r, z true, z false) }.

  4. Error correction code - Wikipedia

    en.wikipedia.org/wiki/Error_correction_code

    If the number of errors within a code word exceeds the error-correcting code's capability, it fails to recover the original code word. Interleaving alleviates this problem by shuffling source symbols across several code words, thereby creating a more uniform distribution of errors. [ 21 ]

  5. Check digit - Wikipedia

    en.wikipedia.org/wiki/Check_digit

    The final digit of a Universal Product Code, International Article Number, Global Location Number or Global Trade Item Number is a check digit computed as follows: [3] [4]. Add the digits in the odd-numbered positions from the left (first, third, fifth, etc.—not including the check digit) together and multiply by three.

  6. Abaqus - Wikipedia

    en.wikipedia.org/wiki/Abaqus

    Abaqus FEA [4] [5] (formerly ABAQUS) is a software suite for finite element analysis and computer-aided engineering, originally released in 1978.The name and logo of this software are based on the abacus calculation tool. [6]

  7. Repetition code - Wikipedia

    en.wikipedia.org/wiki/Repetition_code

    Let's say three errors corrupt the transmitted bits and the received sequence is 111 010 100. Decoding is usually done by a simple majority decision for each code word. That lead us to 100 as the decoded information bits, because in the first and second code word occurred less than two errors, so the majority of the bits are correct. But in the ...

  8. Autocorrection - Wikipedia

    en.wikipedia.org/wiki/Autocorrection

    Autocorrect in Windows 10, correcting the word "mispelled" to "misspelled". Autocorrection , also known as text replacement , replace-as-you-type , text expander or simply autocorrect , is an automatic data validation function commonly found in word processors and text editing interfaces for smartphones and tablet computers .

  9. Abacus - Wikipedia

    en.wikipedia.org/wiki/Abacus

    An abacus (pl. abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Hindu–Arabic numeral system. [1] An abacus consists of a two-dimensional array of slidable beads (or similar objects). In their ...