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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 .
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 ...
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In 2007, Facebook launched Facebook Pages for brands and celebrities to interact with their fanbases. [ 48 ] [ 49 ] 100,000 Pages [ further explanation needed ] launched in November. [ 50 ] In June 2009, Facebook introduced a "Usernames" feature, allowing users to choose a unique nickname used in the URL for their personal profile, for easier ...
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.
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