Abstract
The broadcast of the liquid crystal display with an intelligent voice system is involved in liquid crystal display, the serial data received from the circuit, microprocessor control circuitry, LCD control circuit, LCD screen, ISD1700 series voice chips form, characterized by the computer's serial port and serial line of the input data reception circuit connected to the serial output data receiving circuit and control circuit in single chip microcontroller serial data terminal connected to Microcontroller and computer using asynchronous serial communication (RS-232 communications), MCU control circuit output LCD control circuit with the input connected to Microcontroller external interrupt input circuit response with the keyboard connected to the output signal. MCU control circuit output and the ISD voice chip, the input control circuit connected with the ISD voice chip microcontroller using SPI communication control (synchronous serial communication), the utility model can display numbers, text, graphics sound, etc and also to achieve the operator two-way communication with clients, their structure is reasonable, easy to operate.
Keyword: play voice LCD display flash SPI communication RS-232 communication