This paper demonstrates the choice of system scheme, and expounds the overall function and design framework of the system. The hardware and software solutions of each functional module of the system are analyzed emphatically. The hardware platform consists of four parts: the minimum single chip microcomputer system, the shaping circuit, the frequency division circuit and the liquid crystal display circuit. The software part includes main program, liquid crystal display subroutine and data processing subroutine. Finally, the performance of the system is tested, and the experimental results show that the system has stable performance and high reliability.
In order to overcome the shortcomings that traditional frequency measurement methods can't meet the accuracy requirements, a design scheme of frequency measurement system with equal accuracy based on AT89C5 1 is proposed.
This paper discusses the selection of system scheme, and expounds the system function and design framework. The hardware and software solutions of each functional module of the system are analyzed emphatically. The hardware platform consists of four parts: the smallest single chip microcomputer system, the shaping circuit, the frequency division circuit and the liquid crystal display circuit. The software part includes main program, liquid crystal display subroutine and data processing subroutine. Finally, the performance of the system is tested, and the experimental results show that the system has stable performance and high reliability.