subtract operation
1Modulo operation — Quotient (red) and remainder (green) functions using different algorithms. In computing, the modulo operation finds the remainder of division of one number by another. Given two positive numbers, a (the dividend) and n (the divisor), a modulo n… …
2Carry flag — In computer processors the carry flag (usually indicated as the C flag) is a single bit in a system status (flag) register used to indicate when an arithmetic carry or borrow has been generated out of the most significant ALU bit position. When… …
3Binary numeral system — Numeral systems by culture Hindu Arabic numerals Western Arabic (Hindu numerals) Eastern Arabic Indian family Tamil Burmese Khmer Lao Mongolian Thai East Asian numerals Chinese Japanese Suzhou Korean Vietnamese …
4Viterbi decoder — A Viterbi decoder uses the Viterbi algorithm for decoding a bitstream that has been encoded using forward error correction based on a convolutional code. There are other algorithms for decoding a convolutionally encoded stream (for example, the… …
5Barrel shifter — A barrel shifter is a digital circuit that can shift a data word by a specified number of bits in one clock cycle. It can be implemented as a sequence of multiplexers (MUX), and in such an implementation the output of one MUX is connected to the… …
6Mental calculation — comprises arithmetical calculations using only the human brain, with no help from calculators, computers, or pen and paper. People use mental calculation when computing tools are not available, when it is faster than other means of calculation… …
7TI-990 — The TI 990 was a series of 16 bit minicomputers sold by Texas Instruments (TI) in the 1970s and 1980s. The TI 990 was a replacement for TI s earlier minicomputer systems, the TI 960 and the TI 980. It had several uniquely innovative features, and …
8One instruction set computer — Computer science portal A one instruction set computer (OISC), sometimes called an ultimate reduced instruction set computer (URISC), is an abstract machine that uses only one instruction – obviating the need for a machine language opcode …
9Counter machine models — This page supplements counter machine. Although some authors use the name register machine synonymously with counter machine , this article will give details and examples of only of the most primitive species the counter machine of the genus… …
10Apollo Guidance Computer — and DSKY Invented by MIT Instrumentation Laboratory Manufacturer Raytheon Introduced August 1966 …
