Programming instructions

CMOS
Multisim Component Reference Guide 7-36 ni.com
Buffer gate truth table:
7.2.71 4508 (Dual 4-bit latch)
This device contains two independent 4-bit latches.
4-bit latch truth table:
7.2.72 4510 (BCD up/down Counter)
BCD up/down counter truth table:
IENO
000
101
X1Z
Z = High impedance
X = Don’t care
MR PL UP/DN CE CP MODE
0 1 X X X PARALLEL LOAD
0 0 X 1 X NO CHANGE
0 0 0 0 · COUNT DOWN
0 0 1 0 · COUNT UP
1 X X X X RESET
ComponentRef.book Page 36 Thursday, December 7, 2006 10:12 AM