键盘接口定义


键盘接口为 5 针母插座:

5 PIN DIN 180° (DIN41524) FEMALE

引脚定义


PC/AT 键盘接口的引脚定义:

Pin

Name

Description

Technical

1

CLOCK

Clock

CLK/CTS, Open-collector

2

DATA

Data

RxD/TxD/RTS, Open-collector

3

n/c

Not connected

Reset on some very old keyboards.

4

GND

Ground

 

5

VCC

+5 VDC

PC/XT 键盘接口的引脚定义稍有不同:

Pin

Name

Description

Technical

1

CLOCK

Clock

CLK/CTS, Open-collector

2

DATA

Data

RxD/TxD/RTS, Open-collector

3

Reset

Reset

 

4

GND

Ground

 

5

VCC

+5 VDC


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