Digital Logic for Computing by John Seiffertt

Author:John Seiffertt
Language: eng
Format: epub, pdf
Publisher: Springer International Publishing, Cham

The SR Latch

Thus far we’ve seen that our circuits have three basic parts: inputs, logic gates, and outputs. The flow of signals is quite clear: start with the input, flow through the logic to implement a particular computation, and then output the result. If we want a circuit to have memory this means we want the result to be retained. The way to do this is take the output and pump it back into the system: build a circuit where the output wires are also the input wires. Consider the example in Fig. 11.1.

Fig. 11.1SR Latch

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