利用8279芯片实现通过2X8键盘输入加数和被加数并计算出结果，同时将加数、被加数和结果都在LED灯上显示出来。-Chip 8279 through the use of 2X8 and keyboard input addend addend and calculated results, at the same time, addend, addend and the results were in the LED lights on the display.