JPS55126863A - Frequency measuring method - Google Patents
Frequency measuring methodInfo
- Publication number
- JPS55126863A JPS55126863A JP3496979A JP3496979A JPS55126863A JP S55126863 A JPS55126863 A JP S55126863A JP 3496979 A JP3496979 A JP 3496979A JP 3496979 A JP3496979 A JP 3496979A JP S55126863 A JPS55126863 A JP S55126863A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- gate
- signal
- counting
- gates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To measure a frequency economically by a simply-constituted circuit, by generating a gate signal from a clock signal to obtain a reference frequency value of 1×10n and by counting a measured frequency arriving in the gate signal.
CONSTITUTION: A signal from input terminal 1 is waveform-shaped by waveform shaping circuit 2 and supplied to gate 3. At this time, when a pulse is supplied to set terminal 11, flip-flop circuit 9 is inverted and gates 3 and 6 are made open. A clock signal of a reference frequency appears at gate 6 and is counted by counting circuit 7. When the count value reaches a predetermined count value of 10n, decoding circuit 8 sends a pulse out to reset flip-flop circuit 9 and gates 3 and 6 are closed. With gate 3 open, the input signal is counted by counting circuit 13 and decoded by decoding circuit 14, whose output is displayed by number display unit 15.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3496979A JPS55126863A (en) | 1979-03-24 | 1979-03-24 | Frequency measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3496979A JPS55126863A (en) | 1979-03-24 | 1979-03-24 | Frequency measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55126863A true JPS55126863A (en) | 1980-10-01 |
Family
ID=12428962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3496979A Pending JPS55126863A (en) | 1979-03-24 | 1979-03-24 | Frequency measuring method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55126863A (en) |
-
1979
- 1979-03-24 JP JP3496979A patent/JPS55126863A/en active Pending
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