JPS55113963A - Device for preventing flicker of frequency counter display - Google Patents

Device for preventing flicker of frequency counter display

Info

Publication number
JPS55113963A
JPS55113963A JP2218779A JP2218779A JPS55113963A JP S55113963 A JPS55113963 A JP S55113963A JP 2218779 A JP2218779 A JP 2218779A JP 2218779 A JP2218779 A JP 2218779A JP S55113963 A JPS55113963 A JP S55113963A
Authority
JP
Japan
Prior art keywords
counter
value
gate signal
frequency
down counter
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
Application number
JP2218779A
Other languages
Japanese (ja)
Inventor
Yuzo Kashimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2218779A priority Critical patent/JPS55113963A/en
Publication of JPS55113963A publication Critical patent/JPS55113963A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

PURPOSE: To eliminate the flicker of measured counted value of a frequency counter to measure the constant frequency input by displaying the value counted previously when the difference between the value counted previously and the value counted next is less than predetermined value.
CONSTITUTION: While first gate signal b is applied to an up-down counter, the up counter 5 counts the input signal, while the down counter 10 counts down it. If the input signal frequency does not alter, the content of the down counter 10 becomes "1", "0" or "-1" at the end of the counting period. Therefore, the output of a comparator 12 is held at low level. Thus, a D flip-flop 12 is not set, a latch timing gate 9 is not opened even at the time of second gate signal c, and the content of the latch circuit 7 is not altered. Accordingly, the indication on an indicator 6 is not altered. Next counting period is completely prepared by a third gate signal d.
COPYRIGHT: (C)1980,JPO&Japio
JP2218779A 1979-02-26 1979-02-26 Device for preventing flicker of frequency counter display Pending JPS55113963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2218779A JPS55113963A (en) 1979-02-26 1979-02-26 Device for preventing flicker of frequency counter display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2218779A JPS55113963A (en) 1979-02-26 1979-02-26 Device for preventing flicker of frequency counter display

Publications (1)

Publication Number Publication Date
JPS55113963A true JPS55113963A (en) 1980-09-02

Family

ID=12075782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2218779A Pending JPS55113963A (en) 1979-02-26 1979-02-26 Device for preventing flicker of frequency counter display

Country Status (1)

Country Link
JP (1) JPS55113963A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58148524A (en) * 1982-02-26 1983-09-03 Nippon Seiki Co Ltd Pulse counting system
JPS58148523A (en) * 1982-02-26 1983-09-03 Nippon Seiki Co Ltd Pulse counting system
JPS58170223A (en) * 1982-03-31 1983-10-06 Nippon Seiki Co Ltd Pulse count system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58148524A (en) * 1982-02-26 1983-09-03 Nippon Seiki Co Ltd Pulse counting system
JPS58148523A (en) * 1982-02-26 1983-09-03 Nippon Seiki Co Ltd Pulse counting system
JPS58170223A (en) * 1982-03-31 1983-10-06 Nippon Seiki Co Ltd Pulse count system

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