AB+AB 1 1 1 1 1 1 1 1 1 1
1 1
由最右边2栏可知,与AB+AB的真值表完全相同。
2.1.3 用逻辑代数定律证明下列等式
(3)()AABCACDCDEACDE++++=++
解:()AABCACDCDE++++
(1)ABCACDCDE=+++
AACDCDE=++
ACDCDE=++ ACDE=++
2.1.4 用代数法化简下列各式
(3)()ABCBC+
解:()ABCBC+
()(ABCBC=+++
ABACBBBCCBC=+++++
(1ABCABB=++++ ABC=+
(6)()()()(ABABABAB++++
解:()()()(ABABABAB++++
()()ABABABAB=.+.+++
BABAB=++ ABB=+
AB=+ AB=
(9)ABCDABDBCDABCBDBC++++
解:ABCDABDBCDABCBDBC++++ ()( () () ()
ABCDDABDBCDCBACADCDBACADBACDABBCBD=++++ =+++ =+++
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