矩阵键盘又称为行列式键盘，它是用

4

条

I/O

线作为行线，

4

条

I/O

线作为列线组成的键盘。在

行线和列线的每一个交叉点上，设置一个按键。这样键盘中按键的个数是

4

×

4

个。这种行列式键盘

结构能够有效地提高单片机系统中

I/O

口的利用率。



-Matrix keyboard, also known as the determinant keyboard, it is used

4

article

The I/O

Line as the line,

4

article

The I/O

Line as column line consisting of a keyboard. in

Lines to rows and columns of each intersection, set a button. The number of keys in this keyboard is

4

x

4

A. The determinant keyboard

Structure can effectively improve the microcontroller in the system

The I/O

The utilization rate of the mouth.