Current research of serial communication is merely between PC computer and microcontroller. Also, the serial communication between PDA and microcontroller is developed with text style language. We developed a serial communication system which takes the PIC16F873 as the sampling machine, Palm OS as the supervisory computer and LabVIEW 7. 0 as developing language. This paper provides the hardware and software design scheme and simulated test result of the system. The experimental results prove that this system provides stab...