并行接口定义

计算机并行接口外观是 25 针母插座，(见下图)，顾名思义并行口传输的是并行数据8位数据同时传输，数据位是从D0到D8一共8位,其他的控制位有很多。我们常见的电脑打印机一般都是使用计算机并行接口的.

 

      计算机并行口

Pin	Name	Dir	Description
1	/STROBE		Strobe
2	D0		Data Bit 0
3	D1		Data Bit 1
4	D2		Data Bit 2
5	D3		Data Bit 3
6	D4		Data Bit 4
7	D5		Data Bit 5
8	D6		Data Bit 6
9	D7		Data Bit 7
10	/ACK		Acknowledge
11	BUSY		Busy
12	PE		Paper End
13	SEL		Select
14	/AUTOFD		Autofeed
15	/ERROR		Error
16	/INIT		Initialize
17	/SELIN		Select In
18	GND		Signal Ground
19	GND		Signal Ground
20	GND		Signal Ground
21	GND		Signal Ground
22	GND		Signal Ground
23	GND		Signal Ground
24	GND		Signal Ground
25	GND		Signal Ground

     pc并行接口引脚定义