本程序提供了输入表达式计算、积分、微分、拟合、插值等多种数值计算，界面简练，功能强大-procedures for the importation of expression, integral, differential, fitting, interpolation and other numerical calculation, concise interface, powerful

这是一个简单的计算器设计，是用单片机做的，里面有能在keil软件里运行的程序，还有仿真图-This is a simple calculator is designed to do with single-chip, which are able to run keil software program, as well as simulation of Figure