Ben Eater

Learn how computers add numbers and build a 4 bit adder circuit (2015x15)

Air date: Mar 02, 2015

Let's build a circuit that adds numbers! Binary addition is even easier than decimal addition since you don't have to know how to add numbers larger than 1. 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: 2x 74LS86 (Quad two-input XOR gate) 2x 74LS08 (Quad two-input AND gate) 1x 74LS32 (Quad two-input OR gate) 2x 4-position DIP switch 5x LEDs 1x Solderless breadboard 22 gauge wire USB charger and cable or some other 5v power source