Curs 3 - Bazele logice ale calculatoarelor - derivat

x f
y
z
Fig.3.2.2 Implementarea functiei f cu porti logice.
Dar functia din acest exemplu se mai poate scrie sub forma:
f ( x,
y,
z)
= x ⋅ y ⋅ z + x ⋅ y ⋅ z + x ⋅ y ⋅ z + x ⋅ y ⋅ z =
= x ⋅ ( y ⋅ z + y ⋅ z)
+ x ⋅(
y ⋅ z + y ⋅ z)
= x ⋅ ( y ⊕ z)
+ x ⋅(
y ⊕ z)
=
= x ⊕ y ⊕ z
In acest caz schema poate fi implementata cu porti SAU-EXCLUSIV
(fig.3.2.3):
x
y f
z
Fig.3.2.3 Implementarea functiei f cu porti SAU-Exclusiv.
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