单片机；计算器；微电子；模拟电路能进行正数加、减、乘、除四则运算的计算器叫做简单计算器；科学计算器是指能兼容正数的四则运算和乘方、开方运算，具有指数、对数、三角函数、反三角函数及存储等计算功能的计算器。 -Singlechip calculator Microelectronics analog circuit can be a positive number add, subtract, multiply, with the exception of four operations is

基于51的科学计算器程序，可实现开方、自然对数等扩展计算-Based on 51 scientific calculator program can achieve the square root, natural logarithm expansion calculation

计算器，含三角函数、自然对数、n次方，均方根等的功能强大的计算器-Calculator, including trigonometric functions, natural logarithm, n-th power, RMS and other powerful calculator