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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 .
S-Video (a.k.a. separate video, split video, super-video, and Y/C) 1979: 1 Mini-DIN 4-pin, 1 Mini-DIN 7-pin, 1 Mini-VGA, 2 BNC, 2 RCA connectors, 8-pin DIN, [4] SCART 21-pin: S-VHS, some laptop computers, analog broadcast video, 1980-1990s home computers including the Commodore 64, C128 and Atari 8-bit computers: The 4-pin mini-DIN that is most ...
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Matched the contour of the specification diagram more closely, and added pin colouring like the USB receptacle/plug SVG diagrams. HDMI Specification 1.3, p. 21 (4.1.9.1 Type A Receptacle). 09:24, 12 October 2006: 224 × 92 (26 KB) Museo8bits: Recuperar una revisión anterior: 09:23, 12 October 2006: 219 × 82 (23 KB) Museo8bits
The first part number in the series, the 7400, is a 14-pin IC containing four two-input NAND gates. Each gate uses two input pins and one output pin, with the remaining two pins being power (+5 V) and ground. This part was made in various through-hole and surface-mount packages, including flat pack and plastic/ceramic dual in-line.
Height of package from pin tip to top of package. T Thickness of pin. L Length of package body only. L W Pin width. L L Pin length from package to pin tip. P Pin pitch (distance between conductors to the PCB). W B Width of the package body only. W L Length from pin tip to pin tip on the opposite side.
Technically, the Alto is a small minicomputer, but it could be considered a personal computer in the sense that it is used by one person sitting at a desk, in contrast with the mainframe computers and other minicomputers of the era. It is arguably "the first personal computer", although this title is disputed.
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