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Embedded Systems and Computer Architecture by Graham R Wilson

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3

Electronic logic circuits

3.1 Electronic controller

We want an electronic circuit that automatically performs the function of the bank vault access controller discussed in Chapter 2. In this chapter, we see how electronic circuits, called gates, can be made to perform the basic logical functions, AND, OR, and NOT. Using these, we design two commonly used devices, the decoder and the multiplexer. We also see how circuits made from gates can be made to store binary values and how these flip-flops are used to make state machines.

3.2 Development of the bank vault controller design

In Chapter 2 we arrived at the logic expression for a device that will control access to a bank vault. To develop this algebraic expression into functioning hardware, ...

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