Design of data acquisition system based on single-chip-computer technology

The paper introduces the hardware design and the software design of a data acquisition system based on single-chip-computer technology.AT89C51 MCU and TLC2543 A/D chip are used in this system.The whole system can be divided into data acquisition transmitting module and data display module.In data acquisition and transmitting module,TLC2543 is working under the control of AT89C51,the digital signal can be got from TLC2543 output,and data transmission between PC and single-chip-computer is realized by RS232 as the communication interface.In the data display module,data is collected by MSCOMM controller and displayed in Visual Basic environment.