Our computer's clock is built using several 555 timers. This video covers the logic that ties them together, resulting in the completed clock module. See https://eater.net/bbcpu8-clock-module for more. Part 1: https://www.youtube.com/watch?v=kRlSFm519Bo Part 2: https://www.youtube.com/watch?v=81BgFhm2vz8 Part 3: https://www.youtube.com/watch?v=WCwJNnx36Rk Support me on Patreon: https://www.patreon.com/beneater You can get all the components used in this video from any online electronic components distributor for a few dollars. Complete parts list (everything in this video): - Circuit from parts 1, 2, and 3 - 1x 74LS04 (Hex inverter) - 1x 74LS08 (Quad AND gate) - 1x 74LS32 (Quad OR gate) - 1x LED - 22 gauge wire