Printer parallel pin assignments
Signal Pin Nos Signal
STROBE (Input) 1 19 GND
DATA 1 (Input) 2 20 GND
DATA 2 (Input) 3 21 GND
DATA 3 (Input) 4 22 GND
DATA 4 (Input) 5 23 GND
DATA 5 (Input) 6 24 GND
DATA 6 (Input) 7 25 GND
DATA 7 (Input) 8 26 GND
DATA 8 (Input) 9 2