Introduction - If you have any usage issues, please Google them yourself
In single-chip multi-chip enough into the multi-communication system, the master-slave multi-machine communications is a multi-machine communication is relatively simple means of communication. Due to constraints, the design uses STC Series MCU development board to carry out development and design. Hardware some of the major three single-chip development board through data lines connected. Single-chip used in the main board, keyboard, four of the LED display, MAX232 chip and data-line interface. Three single-chip board, a host, and the other two do so from the machine. Data line is the host of the TXD, RXD, respectively, then from the machine RXD, TXD