For example nor gates or flip flops.
In: Technology
Let’s talk about a simpler gate first…the AND gate. Imagine a light bulb wired to a battery with two switches, A & B, in series. The light bulb goes on only if both switches are turned on. That’s an AND gate, except in integrated circuits we use transistors instead of switches, and they control other transistors instead of light bulbs.
If you make a similar circuit with the switches in parallel, that’s an OR gate.
With a little ingenuity, you can wire up a [NOR gate](https://i.stack.imgur.com/mXhlO.png) (the inverse of an OR gate). To make it easier and save current, we use two different kinds of transistors, one that turns on with a high voltage, and one that turns on with a low voltage.
By wiring up several logic gates, we can make more complex things like [flip-flops](https://sub.allaboutcircuits.com/images/04196.png). Using both logic gates and flip-flops (and a few other things like transfer gates and multiplexers) we can build up complex logic circuits like an adder. Using a bunch of complex circuits we can make a device like a microprocessor.
Latest Answers