HP 7475A Service Manual page 62

Model 7475A
1-A~-2
INDICATOR SYMBOLS !Continued)
COMMON CONTROL BLOCK
+5V 16
8
--;..;;;..a1
6 ~0------F-A-I
7
0
FA
CONTROL
BLOCK
ARRAY
The Control Block is used to show when common
control signals are applied to a group of mechani·
cally connected, but functionally separate units.
F input must be low to enable outputs. When
F is high, outputs are high impedance. Address
input determines whether 0 or 1 input will
pass to output.
Figure 6-23. ANSI. Y32.14 Logic Symbols (Sheet 4 of
6)
Section VI
6-23