Our computer's clock is built using several 555 timers. The second is configured as a basic monostable circuit to debounce a pushbutton. See https://eater.net/bbcpu8-clock-module for more. Part 1: https://www.youtube.com/watch?v=kRlSFm519Bo Part 3: https://www.youtube.com/watch?v=WCwJNnx36Rk Part 4: https://www.youtube.com/watch?v=SmQ5K7UQPMM 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 part 1 - 1x 555 timer IC - 1x 1kΩ resistor - 1x 1MΩ resistor - 1x 330Ω resistor - 1x 2µF capacitor - 1x 0.1µF capacitor - 1x 0.01µF capacitor - 1x Momentary "Microtivity 6mm tact switch" - 1x LED - 22 gauge wire