组合逻辑电路分析和设计课件.ppt

CHAPTER 5 Combinational Logic Analysis and Design （组合逻辑电路分析和设计）;组合逻辑电路;Combinational logic circuit;5-1 Basic Combinational Logic Circuits 5-2 Combinational Logic Circuits Analysis 5-3 Implementing Combinational Logic 5-4 The Universal Property of NAND and NOR Gates 5-5 Combinational Logic Using NAND and NOR Gates 5-6 Logic Circuit Operation With Pulse Waveform;AND-OR Logic（与-或逻辑电路） AND-OR-Invert Logic（与-或-非逻辑电路） Exclusive-OR Logic（异-或逻辑电路）;AND-OR Logic;Truth table;AND-OR Invert Logic;Exclusive-OR Logic;Exclusive-NOR Logic ;Two equivalent ways of implementing the exclusive-NOR ;5-2 Combinational Logic Circuits Analysis (组合逻辑电路分析);BC;BC;Analysis the function of the circuit (review); 5-3 Implementing Combinational Logic （组合逻辑电路的设计）;Example：Implement a voting circuit for three person. Each person has one button. Press the button for agreement and leave it for disagreement. The output will show on a LED light. The light on when majority people agreed. Otherwise, the light off. ; From logic function to Truth Table;Truth Table;A;3. From Logic Expression to Logic Circuit;Implement a three inputs parity checker: The output is “1” when the number of input “1” is odd. ; (3) logic circuit;step1. From an application to a Truth Table;5-3 The Universal Property of NAND and NOR Gates ;NAND Gate as an Inverter;A;Two NAND Gates as an AND Gate;Three NAND Gates as an OR Gate;Four NAND Gates as NOR Gate;Four NAND Gates as XOR Gate;NOR Gate as an Inverter;Two NOR Gates as an OR Gate;Three NOR Gates as an AND Gate;Four NOR Gates as an NAND Gate ; NAND logic for X = AB + CD ?; NAND Logic Diagrams Using Dual symbols;Use of the appropriate dual symbols in a NAND logic diagram;EXAMPLE : Implement each expression with NAND logic using appropriate dual symbols;EXAMPLE : Implement each expression with NAND logic using appropriate dual symbols; NOR LOGIC;三人表决电路: Implement a voting circuit for three person(A、B、C):;Implement a three inputs parity checker: The output