Quiz answers – Elenco Understanding Logic Gates and Circuits User Manual
Page 36
Quiz Answers
5. Using De Morgan’s laws, show how you can derive the S-R NAND gate circuit from the
S-R NOR circuit. Note that the outputs of an S-R NOR latch are the opposite of the S-R
NAND latch.
R
S
S-R NOR
=
R
S
=
R
S
=
R
S
=
R
S
S-R NAND
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
This shows that
outputs of S-R
NAND latch are
the opposite of
the S-R NOR
latch
36
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