Parallel Port
A parallel port is a parallel communication physical interface through which
information transfers in or out 8 bits of data (1 byte) at a time. These 8 bits
are transmitted parallel to each other, as opposed to the same eight bits being
transmitted serially (all in a single row) through a serial port. A parallel port is
also known as a printer port or Centronics port and is commonly used to
connect to a printer.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
316
Ports
Signal
/STROBE
D0
D1
D2
D3
D4
D5
D6
D7
/ACK
BUSY
PE
SEL
Pin
Signal
14
/AUTOFD
15
/ERROR
16
/INIT
17
/SELIN
18
GND
19
GND
20
GND
21
GND
22
GND
23
GND
24
GND
25
GND