A calculator in Delphi, works with Mouse or Keyboard. It contains something about using Math functions, Clipboard, Error handling, Timer and etc.

SysTools is a library of utility routines & classes for Borland Delphi, C++Builder, & environments that support COM. It includes 1-D & 2-D bar codes, sorting, money routines, logging, high-precision math, a run-time math expression analyzer,

这是一个限时数学运算程序。程序随机产生一个四则运算，由用户填写答案，程序对正确性进行判断-This is a timed math program. Program randomly generates a four operations by the user to fill in the answer, to judge the correctness of program

a math problem solution to help caculate SysCoord