掌宇公司44b0实验平台的测试程序，共16个程序,包含led,数码管，开关，串口，蜂鸣器，实时时钟，键盘中断，ADC，网卡，PS2键盘，UC/GUI-company 44b0-yu palm experimental test platform, with a total of 16 procedures, including led, digital control switches, serial, buzzers, real-time clock, keyboard interrupt, ADC, Ethernet, PS2 keyboard, UC/GUI
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