145
Parallel Port Signals
Pin Signal Name I/O Pin Signal Name I/O
1 Strobe O 14 Auto Feed N/A
2 Data Bit 0 I/O 15 Error I
3 Data Bit 1 I/O 16 Initialize O
4 Data Bit 2 I/O 17 Select (In) O
5 Data Bit 3 I/O 18 Ground Power
6 Data Bit 4 I/O 19 Ground Power
7 Data Bit 5 I/O 20 Ground Power
8 Data Bit 6 I/O 21 Ground Power
9 Data Bit 7 I/O 22 Ground Power
10 Acknowledge I 23 Ground Power
11 Busy I 24 Ground Power
12 Paper Empty I 25 Ground Power
13 Select O
Mouse Port Signals
Pin Signal Name I/O Pin Signal Name I/O
1 Mouse Data I/O 4 +5Vdc Power
2 No Connection N/A 5 Mouse Clock I/O
3 Ground Power 6 No Connection N/A
Keyboard Port Signals
Pin Signal Name I/O Pin Signal Name I/O
1 Keyboard Data I/O 4 +5Vdc Power
2 Mouse Data N/A 5 Keyboard Clock I/O
3 Ground Power 6 Mouse Clock N/A
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