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The 74181 is a 7400 series medium-scale integration (MSI) TTL integrated circuit, containing the equivalent of 75 logic gates [3] and most commonly packaged as a 24-pin DIP. The 4-bit wide ALU can perform all the traditional add / subtract / decrement operations with or without carry, as well as AND / NAND, OR / NOR, XOR , and shift .
The Xerox Alto is a computer system developed at Xerox PARC (Palo Alto Research Center) in the 1970s. It is considered one of the first workstations or personal computers, and its development pioneered many aspects of modern computing.
The combinational logic circuitry of the 74181 integrated circuit, an early four-bit ALU, with logic gates An ALU is a combinational logic circuit, meaning that its outputs will change asynchronously in response to input changes.
A fact from 74181 appeared on Wikipedia's Main Page in the Did you know column on 3 November 2007. The text of the entry was as follows: Did you know ...
4-bit computing is the use of computer architectures in which integers and other data units are 4 bits wide. 4-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers or data buses of that size.
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74181; A. Additron tube; History of the Amiga; Analog computer; History of Apple Inc. B. BUNCH; ... This page was last edited on 20 May 2024, at 07:20 (UTC).