Heathkit H9 Manual page 85

Page 83
Integrated Circuits (cont'd.)
INPU TS IN PUTS
o u IP u T s /Lom- DfiAi-[rT.
DAIA
0s 0q
COUNT COUNI 06 09
B
*r- D0WN
UP
\----v-
INPUT INPUTS
\----.VJ
INPUTS
A C LEAR BO RRO II/ C AR RY LO AD
oB o4 DowN uP
oc
oo
SYNCHRONOUS
UP/DOWN
DUAL CLOCK COUNTER
BINARY WITH CLEAR
443-81 5
v c c
4 8 4A 4Y 3 8 3A 3 Y
2Y CN D
QUADRUPLE 2-INPUT
POSITIVE.AND GATE
WITH OPEN-COLLECTOR
OUTPUTS
443-816
SYNCHRONOUS
UP/DOWN
DUAL CLOCK COUNTER
BCD WITH CLEAR
INPUT S INPU TS
#r;;\
oJTp.jTs fo;D D-ftA_i;i-d,
U A I A L L LA X
vcc r 66iF6fr dTril c D
DAIA 0e 0a
C 0U NT CO U NI 0f 0 6 6 N0
B
*rJ 00WN
Up
s:-v-:/
INPUI INPUIS
\--'\,_J
INPUIS
OU TPUT S
coTNT cOUNT
0A D OWN U P
443-817