摘要
本设计为了实现电话键盘的拨号功能，根据所学的单片机知识首
先通过编写 C 程序通过 KeiL C 进行调试，编译得到机器代码，调试
成功后通过烧写工具进行功能测试，并通过串口调试程序验证串口发
送和自动重发功能。设计过程中，一开始程序功能有限，但通过不断
的改进和查阅资料获得了所需的功能，其中行列式键盘的程序和串口
程序都比较关键。最终实现了按键拨号，数码管显示和自动重播等目
标功能。
关键字：行列式键盘，串口通信 ，数码管显示，自动重播，KeiLC
ABSTRACT
In order to achieve the design of telephone keypad dialing function, according to study
single-chip knowledge first through writing C program through the KeiL C compiler
debugging, get the machine code, debugging success by writing tools for functional
testing, and through the serial debugging program verify serial transmission and
automatic retransmission function.In the design process, first the program features a
limited, but through continuous improvement and access to information to obtain the
desired function, wherein the determinant keyboard procedures and serial procedures are
the key.Finally realizes the key dialing, digital tube display and automatic replay, target
function.
KEY WORDS: Determinant keyboard, serial communication, digital display,
automatic replay, KeiLC
