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Electronics All-in-One For Dummies, UK Edition by Doug Lowe, Dickon Ross

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Chapter 3

Putting Logic Circuits to Work

In This Chapter

arrow Implementing logic gates with transistors

arrow Looking at TTL and CMOS integrated circuits

arrow Building simple logic circuits

In this chapter you get the chance to work with circuits using the popular logic gates that we introduce in this minibook’s Chapter 2. We show you the basics of creating logic gates from simple transistor circuits and look at two popular integrated circuit (IC) families that provide prebuilt logic gates: transistor-transistor logic and complementary metal-oxide semiconductor logic, which sound less intimidating when abbreviated to TTL and CMOS.

tip.eps Unless you’re already well up-to-speed on logic gates, we suggest that you read Chapter 2 of this minibook before tackling the projects in this chapter. It isn’t going to make much sense if you aren’t familiar with the different types of gates we describe in that chapter.

Creating Logic Gates with Transistors

In Book II, Chapter 6, we discuss how you can use transistors as switches (if you want to know how transistors work, check out that chapter). In a nutshell, a voltage ...

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