单片机液晶秒表计算器完整修改版本



可以实现两种功能的切换,其他功能自行对照代码研究。4*4矩阵键盘,第一排前三列是实现小时\分钟\秒的加.第二排前三列是实现小时\分钟\秒的减.当然还可以通过设置矩阵键盘的键值,来实现加\减\乘\除四则运算,由数码管显示参与运算的数字以及最终的运算结果-Single-chip LCD calculator stopwatch can complete a modified version of the switch to achieve two functions, and other functions to study the control code. 4* 4 matrix keyboard, the first row is to achieve the first three hours out \ minutes \ seconds plus. The second row is to achieve the first three hours out \ minutes \ seconds by. Of course, by setting the matrix can also be keyboard keys to to achieve increases \ by \ x \ in addition to four computing, digital tube display by the number of operations involved in computing the final results, as well as