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Audible Feedback
Assembly Cord
0000000
2
4 5 6
8
9
Blowup of KBI
Key
Keyboard Signals
I/O
Conn
KB1 Conn
at Disploy
at
Signal
Station
Keyboard
1
D
Bit 0
2
E
Bit 1
3
F
Bit 2
4
H
Bit 3
5
J
Bit 4
6
L
Bit 6
7
M
Bit 7
8
N
Parity Bit
9
R
Strobe
10
-
Audible Feedback Signal
11
X and Y
Gnd (OV dc)
12
-
Audible Feedback Return
13
Z
-12V dc
Volt ...
"90' ' ' ' 0 ' \ \
Audible Feedback
Fram/fo
Cord Pin
1
*
I/O
Conn 10
2
*
I/O
Conn 25
3
*
I/O
Conn 12
4
*
I/O
Conn 13 and KBI
Z
5
Not Used
6
Not Used
7
Not Used
8
Audible Feedback Assy (White wire)
9
Audible Feedback Assy (Blue wire)
*
At Disploy Station
I/O
Conn
KBI Conn
at Disploy
at
Signal
Station
Keybaard
14
T
Alpha
15
U
DE Up Shift
16
S
Numeric -
17
P
Flip-Flop Enable
18
K
Bit 5
19
A
Spore
20
Not Used
Not Used
21
Not Used
Not Used
22
C
Reset
23
B
Spore
24
V and W
+8V dc
25
-
Audible Feedback "8V dc
8V d<
'0
5V d<
D
5""m
CO""o«
T.~;"o'.
(K8
'I
Common Logic Area
I
I
L_-,
L_
Top View
Diagram 7-8. Type A Keyboard Pin Assembly and Terminal Location
7·10
Address Bus
Function
Input Signal
+S\I
Return
-12V
Return
-12V
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