A parallel port is a computer parallel communication physical interface for connecting various peripherals such as printer, sound cards, webcams, gamepads, modems, joysticks and external hard disk drives and CD-ROM drives. Below schematic shows the IEEE 1284-A parallel port connector pinout schematic diagram.

parallel port connector pinout schematic diagram

Pin# Assignment Pin# Assignment

1
2
3
4
5
6
7
8
9
10 11 12 13

strobe
data 1
data 2
data 3
data 4
data 5
data 6
data 7
data 8
ack
busy
error
select

14
15
16
17
18
19
20
21
22
23
24
25

autoFD
fault
init
selectIn
signal ground
signal ground
signal ground
signal ground
signal ground
signal ground
signal ground
signal ground



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