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The 74181 is a 4-bit slice arithmetic logic unit (ALU), implemented as a 7400 series TTL integrated circuit. Introduced by Texas Instruments in February 1970, [ 1 ] it was the first complete ALU on a single chip. [ 2 ]
In computing, an arithmetic logic unit (ALU) is a combinational digital circuit that performs arithmetic and bitwise operations on integer binary numbers. [ 1 ] [ 2 ] This is in contrast to a floating-point unit (FPU), which operates on floating point numbers.
4-bit BCD arithmetic logic unit 24 74F582: 74x583 1 4-bit BCD adder 16 74F583: 74x588 1 octal bidirectional transceiver with IEEE-488 termination resistors three-state 20 74F588: 74x589 1 8-bit shift register, input latch three-state 16 SN74LS589: 74x590 1 8-bit binary counter, output registers three-state 16 SN74LS590: 74x591 1
This template is for articles like Exclusive or. The colors white and red correspond to Venn diagrams like File:Venn0110.svg , as well as other files like File:Variadic logical XOR.svg . {{ 2-ary truth table | 0 | 1 | 1 | 0 |< math > A \oplus B </ math >}}
Let's talk if you disagree with the current wording, "The 74181 is a bit slice arithmetic logic unit (ALU), implemented as a 7400 series TTL integrated circuit. " 74s181 00:16, 3 November 2007 (UTC) microprocessors that have integrated ALUs
Created Date: 8/30/2012 4:52:52 PM
Some models of the DEC PDP-series 'minis' used the 74181 ALU as the main computing element in the CPU. Other examples were the Data General Nova series and Hewlett-Packard 21MX, 1000, and 3000 series. In 1965, typical quantity-one pricing for the SN5400 (military grade, in ceramic welded flat-pack) was around 22 USD. [19]
Applications such as Pinball take advantage of this to accelerate performance. The Alto has a bit-slice arithmetic logic unit (ALU) based on the Texas Instruments 74181 chip, a ROM control store with a writable control store extension and has 128 (expandable to 512) KB of main memory organized in 16-bit words.