4-bit relay adder

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Uploaded by on May 17, 2009

This is a 4-bit adder built from 31 5V DC DPDT relays.

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Science & Technology

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Standard YouTube License

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  • Did you know it is possible to build a full adder with only two relays? If you define "1" as a connection to +Vcc and "0" as a connection to ground (or -Vcc)

    Here is a schematic

    i41.tinypic dot com slash ot456b.gif

  • @JamesMovingTarget yes you can but it takes up a lot of space

  • what kind of relays did you use?

  • Can u make it in minecraft ?

  • @GalaticTG well an overflow is impossible because each input goes only up to 15. Therfore the highest sum possible is 30, which fits nicely into a 4-bit adder's range of 31.

  • nice though you might want to make the last adder a full adder anyways because the last carry out bit is used to indicate if an over flow has occurred.

  • sorry i forgot the "e" settle your tits.

  • @XDalutZX thats not "a rectile disfuntion" douchebag

  • Pretty simple concept once you get your head around the adder. The harder part is the actual displaying. Which most of the time requires converting to BCD then converting to 7-segment. I thought you said "porn" not pong. I laughed haha.

  • @vaper192 i meant that when ur having sex ur come prematurly meaning u climax to soon its called a rectile disfunction. and trust girls like guys that can last

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