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Processor PCB
Table 2-6 Parallel Printer Connectors Pin Assignments
PIN NUMBER PIN NUMBER PIN NUMBER REMARKS
SIGNAL
AT A
ATB
ATC
DATA STB
1
3
2
DATA 1
2
6
16
DATA 2
3
7
4
DATA 3
4
8
17
DATA 4
5
9
5
DATA 5
6
10
18
DATA 6
7
11
6
DATA 7
8
12
19
DATA 8
9
13
7
ACK
10
2
14
Input Busy
11
22
9
PE
12
29
25
SELECT
13
4
15
Signal Ground
14
NC
NC
NC
15
NC
NC
Signal Ground
16
NC
NC
Chassis Ground
17
NC
NC
+5 Vdc
18
27
NC24
Twisted Pair -
Ground (Pin 1)
19
NC
NC
Ground (Pin 2)
20
20
8
Ground (Pin 3)
21
21
21
Ground (Pin 4)
22
5
3
Ground (Pin 5)
23
24
10
Ground (Pin 6)
24
26
11
Ground (Pin 7)
25
28
12
Ground (Pin 8)
26
30
13
Ground (Pin 9)
27
31
26
Ground (Pin 10)
28
NC
Ground (Pin 11)
29
NC
Ground (Pin 31)
30
NC
Input Prime
31
23
22
"FaUIT
32
25
23
Signal Ground
33
NC
NC
NC
34
NC
NC
NC
35
18
Input Busy
36
NC
NC
19
20
No siRnal
1
1
No signal
NOTE: NC means No Connection.
2-31
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