Describe: The program is based on 51 single-chip digital frequency meter, digital tube with a small amount of logic chip count and display the frequency of waveform points.

File list(Click to check if it's the file you need, and recomment it at the bottom):
  freq_meter\calculate.c
  ..........\calculate.h
  ..........\delay.c
  ..........\delay.h
  ..........\frequence.doc
  ..........\freq_meter.hex
  ..........\freq_meter.Uv2
  ..........\initial.c
  ..........\initial.h
  ..........\interrupt.c
  ..........\interrupt.h
  ..........\key.c
  ..........\key.h
  ..........\main.c
  ..........\smg.c
  ..........\smg.h
  freq_meter