2023年《数字电路逻辑设计》逻辑函数及其化简练习题.pdf
优秀学习资料 欢迎下载 数字电路逻辑设计练习题-逻辑函数及其化简 一.用公式证明下列各等式。1.()=D=+BC+BCD=+D=ABACBC DAB ACDABACBCDABACABAC原式左边右边 2.A+BC(1+D)+BC=+BC=+BC=BC+BC=+BC=A CA BC DABCA CA BA CA BAC BAA 原式左边()右边 3.BCDBCDACD+ABC+A BCD+BC+BCDBC+BD=BCD+ABCDBCD+BCD+ABC+BC+ACD=BCD+ABCD+BD+BC+ACD=BCD+ACD+BCD+BD+BC=BCD+ACD+BD+DC+BC=BCD+BD+DC+BC=CD+B+BD+C=BC+BD+BC=DDBCDDDDDD原式左边()()右边 4.AB B+D CD+BC+ABD+A+CD=1=AB B+D CD BC+A BD A+C+D=AB+B+D+CD)(B+CC D=(B+C+C D=BC+BD+CD+C+D=1=原式左边()+(B+D))+右边 二.写出下列各逻辑函数的最小项表达式及其对偶式、反演式 的最小项表达式 1.F=ABCD+ACD+BD=mm(0,1,2,3,5,7,8,9,10,13)F*=m(2,5,6,7,8,10,12,13,14,15)(4,6,11,12,14,15)F 2.F=AB+AB+BC=mm(0,1,6)F*=m(1,6,7)(2,3,4,5,7)F 3.F=AB+CBD+A D=mm(0 2 3 4 10 11 12)F*=m(3 4 5 11 12 13 15)BC (1,5,6,7,8,9,13,14,15)F,三.用公式法化简下列各式 1.F=ABC+ACD+AC=A(BC+C)+ACD=ACABA CD=C(AD)AB=AC+CD+ABA 2.F=AC D+BC+BD+AB+AC+BC=AC D+BC+BD+AB+AC+BC+BC=AC D+BC+AC+B=AD+C+B 3.F=(A+B)(A+B+C)(A+C)(B+C+D)F*=AB+ABC+AC+BCD=AB+AC+BCD=AB+AC F=(F*)*=(A+B)(A+C)=AC+AB 4.F=AB+ABBC+B CAB+ABBC+B CAB+ABBC+B CAB CAAFCABBCCABB CC 5.F=AC+B()()()()CB ACACFA CBCABCABCABA CBCCABCABCABCAB CACBC 四.用图解法化简下列各函数。1.F=ABC+ACD+AC AB CD 00 01 11 10 优秀学习资料 欢迎下载 00 1 1 01 1 1 1 1 11 1 10 1 F=(8,9,10,11)(1,5,9,13)(8,9,12,13)mmmCDABAC 2.F=(A+B)(A+B+C)(A+C)(B+C+D)F=m(4,5,6,7)+m(10,11,14,15)=AB+AC 3.F(A,B,C,D)=m(0,1,3,5,6,8,10,15)F=m(0,1)+m(1,3)+m(1,5)+m(8,10)+m(6)+m(15)F=A B C+A BD+A CBDADABCDABCD 4.(A,B,C,D)=(4,5,6,13,14,15)Fm (4,5)(6,14)(13,15)FmmmABCBCDABD 5.(,)(4,5,6,8,9,10,13,14,15)F A B C Dm 6.(,)(0,1,4,7,9,10,15)(2,5,8,12,13)F A B C Dmd (0,1,4,5,8,9,12,13)(5,7,13,15)(0,3,8,10)FmmmCBDB D 7.(,)(4,5,6,13,14,15)(8,9,10,11)F A B C Dmd (9,11,13,15)(4,5)(6,14)FmmmADABCBCD 8.(,)(5,7,13,15)MF A B C DBD 9.(,)(1,3,9,10,11,14,15)MF A B C D (1,3,9,11)(10,11,14,15)()()MMFBDA C AB CD 00 01 11 10 00 0 1 0 0 01 0 1 0 0 11 0 1 1 1 10 0 1 1 1 AB CD 00 01 11 10 00 1 1 01 1 1 11 1 1 10 1 1 AB CD 00 01 11 10 00 1 01 1 1 11 1 10 1 1 AB CD 00 01 11 10 00 1 1 01 1 1 1 11 1 10 1 1 1 AB CD 00 01 11 10 00 1 1 01 1 1 11 1 1 10 1 AB CD 00 01 11 10 00 1 01 1 1 11 1 10 1 1 AB CD 00 01 11 10 00 01 0 0 11 0 0 0 10 0 0 式法化简下列各式四用图解法化简下列各函数优秀学习资料欢迎下载