应用汇编语言完成实验中从P1口输入键值然后在P2口通过数码块显示的程序，并生成.Hex文件，在Proteus下运行，结果正确。-The application assembler language to complete the experiment from the P1 port input key and digital blocks display program through the P2 port and generate. Hex file, run under the Prot