Ben Eater | SR latch @BenEater | Uploaded 8 years ago | Updated 2 hours ago
Digital logic gets really interesting when we connect the output of gates back to an input. The SR latch is one of the most basic memory circuits that we can build on to make counters, registers, and all sorts of other interesting things.

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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):
1x 74LS32 (Quad two-input OR gate)
1x 74LS02 (Quad two-input NOR gate)
3x 330Ω resistor
3x Momentary "Microtivity 6mm tact switch"
3x LEDs
Solderless breadboard(s)
22 gauge wire
USB charger and cable or some other 5v power source