- Category:
- SCM
- Tags:
-
[C/C++]
[源码]
- File Size:
- 80kb
- Update:
- 2015-10-10
- Downloads:
- 0 Times
- Uploaded by:
- dina
Description: This paper designed a microcontroller based STC89C51 digital frequency meter. The frequency meter includes a single-chip module, amplification shaping module, frequency module and display four modules. Input sine and rectangular signal after amplification of high-frequency transistors, high-frequency precision use 74HC14 available square wave signal the use 74HC390 accuracy can be divided in order to achieve a high-frequency signal measurement, and the use of SCM in 1s gate time of the input signal for a time, in order to obtain a frequency count value through LCD1602 LCD display the frequency display. The test verified the sinusoidal signal frequency up to 10Hz-32MHz, the minimum rms voltage 65mV-1V, the relative error of 0.01 rectangular wave frequencies up to 150Hz-2.2MHz, peak to peak voltage of 66mV-1V, measurement data refresh time 0.1s. The design of the structure is simple, low cost price, easy to operate, suitable for areas of daily life, scientific research and production.
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频率计（改）\ADC0832.c
............\adc0832.h
............\ADC0832.LST
............\ADC0832.OBJ
............\cymometer
............\cymometer.c
............\cymometer.hex
............\cymometer.lnp
............\cymometer.LST
............\cymometer.M51
............\cymometer.OBJ
............\cymometer.opt.bak
............\cymometer.plg
............\cymometer.Uv2.bak
............\cymometer.uvopt
............\cymometer.uvproj
............\cymometer_Opt.Bak
............\cymometer_Uv2.Bak
............\cymometer_uvopt.bak
............\cymometer_uvproj.bak
............\Last Loaded 频率计2.DBK
............\LCD1602.h
............\LCD1602_8A.H
............\频率计.PWI
............\频率计2.DSN
............\频率计2.PWI
频率计（改）
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