Combinational logic circuits Chapter 3 Analysis design
Combinational logic circuits Chapter 3 Analysis & design
Definition of combinational logic Combinational logic n fur nction Let x be the set of all input variables,X={X0,×1,……×n Let y be the set of all output variables, y=tyo, y1,.,ymy a The combinational function f, operated on the input variable set X, to produce the output variable set y a the output is related to the input as y=F(X)>Yi=F(X0,X1,…×X)
Definition of combinational logic Let X be the set of all input variables , X={X0 , X1 , ……, Xn } Let Y be the set of all output variables , Y={Y0 , Y1 , ……, Ym} Y=F(X) >> Yi=F(X0 , X1 , ……, Xn ) The combinational function, F, operated on the input variable set X, to produce the output variable set Y. The output is related to the input as Combinational logic function (F) X0 Xn Y0 Ym
Definition of combinational logic Combinational logic n function(F) a Logic circuits without the feedback from output to input a Logic circuits constructed from a functional completely gate set, contain no memory unit
Definition of combinational logic Logic circuits without the feedback from output to input Logic circuits constructed from a functionally completely gate set, contain no memory unit Combinational logic function (F) X0 Xn Y0 Ym
Analyze a combinational logic circuit Logic diagram a Convert logic diagram to switching equation Switching equation a Simplify the expression a derive the truth table from Simplify equation the simplified switching equation Construct truth table a Give the pertinent statement f the circuit (function\ design Function statement
Analyze a combinational logic circuit Function statement Construct truth table Simplify equation Switching equation Logic diagram Convert logic diagram to switching equation Simplify the expression derive the truth table from the simplified switching equation Give the pertinent statement of the circuit (function\design)
Design a combinational logic circuit Problem statement a Develop a proper Truth table Construction statement of the problem 口 Based on the prob|em switching equations written statement, construct truth table that clearly established the Equations simplified relationship between the nput and output variables Logic diagram drawn Logic circuit built
Design a combinational logic circuit Logic circuit built Logic diagram drawn Equations simplified switching equations written Truth table Construction Problem statement Develop a proper statement of the problem Based on the problem statement, construct truth table that clearly established the relationship between the input and output variables