这是一个在 unix 系统下使用的常用输入界面处理、字段处理、屏幕数据打印等函数。-This is a unix systems in common use input interface, field processing, data on the screen printing function.
作者倾力编写的简易计算器程序,可实现八位数的加减乘除功能。显示和键扫描部分是参考他人的著作。-Author effort to prepare a simple calculator program to realize the number of addition and subtraction, multiplication and division of eight features. Display and key scanning is a reference book to others.