基于TX-1C开发板的简易计算器,可以实现四位数字的运算，比如4567+1234、333*1000。最大可以输出6位结果，不能实现小数运算，数码管最开始的时候显示6个0.-TX-1C development board based on a simple calculator, you can achieve four-digit arithmetic, such as 4567 +1234,333 * 1000. The maximum output of 6 results can not be achieved decimal arithmetic, beginning when the digital display 6 0.