一:计算器

1:可以通过键盘输入,并能显示输入相对应的数字.2:能够进行加,减,乘,除准确的基本运算.

3:能够进行3位或3位的以上的乘,除运算.

4、能显示小数、负数 -: Calculator 1: You can be entered via the keyboard and display input corresponding figures .2: the ability to add, subtract, multiply, and basic arithmetic in addition to accurate. 3: three or more than three multiplied In addition to computing. 4 can display decimal, negative