JPS5557935A - Display unit - Google Patents

Display unit

Info

Publication number
JPS5557935A
JPS5557935A JP13046678A JP13046678A JPS5557935A JP S5557935 A JPS5557935 A JP S5557935A JP 13046678 A JP13046678 A JP 13046678A JP 13046678 A JP13046678 A JP 13046678A JP S5557935 A JPS5557935 A JP S5557935A
Authority
JP
Japan
Prior art keywords
interruption
signal
inputted
certain time
circuit
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
JP13046678A
Other languages
Japanese (ja)
Inventor
Masayuki Miki
Nobuaki Miyagawa
Toru Sugawara
Nobuo Sato
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13046678A priority Critical patent/JPS5557935A/en
Publication of JPS5557935A publication Critical patent/JPS5557935A/en
Pending legal-status Critical Current

Links

Landscapes

  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Digital Computer Display Output (AREA)

Abstract

PURPOSE: To reduce a circuit in size by detecting as an interruption signal a signal inputted in a pulse string by using an interrupting function and then by obtaining data by counting the number of signals within a certain time width.
CONSTITUTION: A pulse signal outputted from a sensor for the speed of a vehicle and its rotational frequency is inputted to terminals P1, P2 and Pn of input part 1. On detecting each input pulse, input part 1 generates an interruption signal, which is inputted to arithmetic control part 2. control part 2 counts the number of interruption signals generated within a certain time width, sends an arithmetic processing result to display part 3, and also generates interruption reset signal (a) to reset the interruption signal, thereby accepting a next interruption signal. Display part 3 displays the count value of interruption generating signals counted within the certain time width. Consequently, the need for an external input-only circuit of the counter, etc., is eliminated to reduce the circuit in size.
COPYRIGHT: (C)1980,JPO&Japio
JP13046678A 1978-10-25 1978-10-25 Display unit Pending JPS5557935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13046678A JPS5557935A (en) 1978-10-25 1978-10-25 Display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13046678A JPS5557935A (en) 1978-10-25 1978-10-25 Display unit

Publications (1)

Publication Number Publication Date
JPS5557935A true JPS5557935A (en) 1980-04-30

Family

ID=15034905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13046678A Pending JPS5557935A (en) 1978-10-25 1978-10-25 Display unit

Country Status (1)

Country Link
JP (1) JPS5557935A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5863568U (en) * 1981-10-23 1983-04-28 三菱自動車工業株式会社 Automotive electronic meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5863568U (en) * 1981-10-23 1983-04-28 三菱自動車工業株式会社 Automotive electronic meter
JPH0317263Y2 (en) * 1981-10-23 1991-04-11

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