Gate A device that performs a basic opera-tion on electrical signals, accepting one or more input signals and producing a single output signal Circuit A combination of interacting gates designed to accomplish a specific logical function 88 Chapter 4 Gates and Circuits Goals After studying this chapter, you should be able to: ± identify the basic gates and describe the behavior of each. ± describe how gates are implemented using transistors. ± combine basic gates into circuits. ± describe the behavior of a gate or circuit using Boolean expressions, truth tables, and logic diagrams. ± compare and contrast a half adder and a full adder. ± describe how a multiplexer works. ± explain how an S-R latch operates. ± describe the characteristics of the four generations of integrated circuits. 4.1 Computers and Electricity Any given electronic signal has a level of voltage. As we mentioned in the last chapter, we distinguish between the two values of interest (binary 0 and 1) by the voltage level of a signal. In general, a voltage level in the
This is the end of the preview. Sign up
access the rest of the document.