单片机小系统简易计算器设计

设计制作要求：用80C51/52单片机小系统编程制作的简易计算器。

1）要有4位LED显示器。

2）要有0—9个数字输入按键和功能按键分别是 “+”，“-”，“*”，“/”，“=” “CLR”，即“加法”，“减法”，“乘法”，“除法”，“等于”，“清除”。

3）显示过程：实验板通电开机后，第一位LED显示器显示“0”。

按下第一组数字，再按运算键“+ 、- 、*、/ ”后，再按第二组数字，继续按下“=”即可显示整数运算结果。按“清除键”清除当前LED显示器上的全部数字。

-Microcontroller small simple calculator design design requirements: simple calculator with 80C51/52 MCU programming produced by small systems. 1) there must be a 4-digit LED display. 2) there must be 0-9 numeric input keys and function keys are " +" , " -" , " *" , " /" , " ="　" CLR" , " addition" , " subtraction" , " multiplication " ,"　division " ,"　equal " ,"　Clear " . 3) Process: experimental board is powered up, the first LED display shows " 0" . Press the first set of numbers, and then press an operator key+,-,*, /, after, and then the second set of numbers, continue to press the " ="　to display the results of integer arithmetic. Press the Clear key to clear all the digits of the current on the LED display.