电话机与串口之间的通讯，包括摘机，挂机，拨号，很难得的实例-between telephone and serial communications, including Abstract Machine, hook, dial-up, a rare example of

电话机与串口之间的通讯，包括摘机，挂机，拨号，很难得的实例-between telephone and serial communications, including Abstract Machine, hook, dial-up, a rare example of