Frequency of a digital circuit in a typical application, the actual hardware design of the devices used more and will have a big delay, caused by measurement error, poor reliability. The frequency of the traditional general is formed by discrete components lap. With large-scale application of the SCM, SCM in frequency measurement also be used more and more. In this issue of the use of ATMEGA16 This low-power, high-performance microcontroller, the stability is better, faster and more accurate calculation accuracy, and promote industrial production and affect people's work and study.
The design is to pass to ATMEGA16 for the control of microcontroller core, and the signal frequency accurate count of the design. Frequency of devices from plastic, amplifiers, crossover, SCM system, LED display modules, and the frequency of testing and LED display.
The graduation project is based on ATMEGA16 SCM frequency of device design, sch circuit design schematics, and under the principle of complete hardware part of the production, use SCM application procedures for the preparation of the system, the final adoption of integrated debugging , To achieve all the required functions, to fully meet the design of this graduation requirement.
Key Words: Digital Frequency, Frequency, Frequency Measurement
