Design and implementation of low cost multichannel data acquisition hardware for computer aided measurement

This paper explains the design of low cost multi-channel Data Acquisition (DAQ) hardware based on serial communication. The paper puts forward an overall scheme of the system involving the hardware and software design. The hardware design is based on microcontroller (AT89C51) and uses key ADC chip (ADC0808) to realize the acquisition of multichannel analog signals and software design is the implementation of algorithm using the LabVIEW software for acquiring the serial data and presenting the serial data as individual channel data corresponding to measurement for analysis and monitoring in LabVIEW environment.