---------------------------
\ 13                    1 /
 \ 25                 14 /
  \---------------------/

 1- Strobe
 2- Databit 0
 3- Databit 1 
 4- Databit 2
 5- Databit 3
 6- Databit 4
 7- Databit 5
 8- Databit 6
 9- Databit 7
10- Acknowledge
11- Busy
12- Paper end
13- Select
14- Auto LF
15- Error
16- Init Printer
17- Select in
18-25 Signal ground