简单手机考试系统的开发，从题库中随机抽题考试，已经经过测试，可以运行！-The development of a simple mobile phone test system, the random question from the test item bank, has been tested, you can run!

串口模拟银行的测试程序. 注意同时下载被测试源码.-A test application for serial bank source program.