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概括简要

Distributive:

(x And (y Or z)) = (x And y) Or (x And z)
(x Or (y And z)) = (x Or y) And (x Or z)

De Morgan:

Not(x And y) = Not(x) Or Not(y)
Not(x Or y) = Not(x) And Not(y)

Double negation:

Not(Not(x)) = x

选择器Mux

a b sel out
0 0 0 0
0 0 1 0
0 1 0 0
0 1 1 1
1 0 0 1
1 0 1 0
1 1 0 1
1 1 1 1
(Not(a) And b And sel) OR
(a And Not(b) And Not(sel)) OR
(a And b And Not(sel)) OR
(a And b And sel) 

= (b ANd sel) OR (a And Not(sel))

DMux

in sel a b
0 0 0 0
0 1 0 0
1 0 1 0
1 1 0 1

分解成两个任务,a和b

in And Not(sel)
in And sel

简评


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