Electronics

Pin Assignments

D-Subminiature Connector, 25 Contacts (DB-25)					Centronics Connector, 36 Contacts
Pin	Name	Function	I/O		Pin	Name	Function	I/O
1	--STROBE	--STROBE	Out		1	--STROBE	--STROBE	Out
2	DATA 0	Data Bit 0 (Data LSB)	Out		2	DATA 0	Data Bit 0 (Data LSB)	Out
3	DATA 1	Data Bit 1	Out		3	DATA 1	Data Bit 1	Out
4	DATA 2	Data Bit 2	Out		4	DATA 2	Data Bit 2	Out
5	DATA 3	Data Bit 3	Out		5	DATA 3	Data Bit 3	Out
6	DATA 4	Data Bit 4	Out		6	DATA 4	Data Bit 4	Out
7	DATA 5	Data Bit 5	Out		7	DATA 5	Data Bit 5	Out
8	DATA 6	Data Bit 6	Out		8	DATA 6	Data Bit 6	Out
9	DATA 7	Data Bit 7 (Data MSB)	Out		9	DATA 7	Data Bit 7 (Data MSB)	Out
10	--ACK	--Acknowledge	In		10	--ACK	--Acknowledge	In
11	BUSY	Busy	In		11	BUSY	Busy	In
12	PE	Paper End	In		12	PE	Paper End	In
13	SLCT	Select	In		13	SLCT	Select	In
14	--AUTOLF	--Auto Line Feed	Out		14	--AUTOLF	--Auto Line Feed	Out
15	--ERROR	--Error	In		16	GND	Ground
16	--INIT	--Initialize Printer	Out		19-30	GND	Ground
17	--SLCTIN	--Select Input	Out		31	--INIT	--Initialize Printer	Out
18-25	GND	Ground			32	--ERROR	--Error	In
					33	GND	Ground
					36	--SLCTIN	--Select Input	Out

--Indicates active low signal

Transmission Signal

Null Parallel Adapter

(for Testing the Parallel Port)

Other Resources

• Interfacing to the IBM-PC Parallel Printer Port
• Interfacing the PC
• Parallel Port Central
• PC Parallel Port Access from LabVIEW

This page is for INFORMATIONAL PURPOSES ONLY.