基于AT89C51单片机的十进制计算器系统设计

Design of Decimal Counter System Based on AT89C51 Chip Microcomputer

本设计是基于AT89C51单片机进行的十进制计算器系统设计,可以完成计算器的键盘输入,进行加、减、乘、除4位无符号数字的简单四则运算,并在LED上相应的显示结果。硬件方面从功能考虑,首先选择内部存储资源丰富的AT89C51单片机,输入采用4×4矩阵键盘。显示采用4位7段共阳极LED动态显示。软件方面从分析计算器功能、流程图设计,再到程序的编写进行系统设计。

The design is decimal counter system based on AT89C51chip microcomputer and can complete the calculator keyboard input,4 bit unsigned numbers’four arithmetic operations of add,subtract,multiply, divide,and can display results on the LED.About hardware,to consider function,selecting the AT89C51 internal storage abundant resources and using 4*4 matrix keyboard input.Using the 4-bit and 7 common anode LED realize dynamic display.About software,from the analysis of the calculator function,flow chart, and then to program the system design.