JPS55123725A - Small-size electronic apparatus - Google Patents

Small-size electronic apparatus

Info

Publication number
JPS55123725A
JPS55123725A JP3038279A JP3038279A JPS55123725A JP S55123725 A JPS55123725 A JP S55123725A JP 3038279 A JP3038279 A JP 3038279A JP 3038279 A JP3038279 A JP 3038279A JP S55123725 A JPS55123725 A JP S55123725A
Authority
JP
Japan
Prior art keywords
input
display equipment
inp
cutting
output
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
JP3038279A
Other languages
Japanese (ja)
Inventor
Ichiro Sado
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP3038279A priority Critical patent/JPS55123725A/en
Publication of JPS55123725A publication Critical patent/JPS55123725A/en
Pending legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE: To obtain a high-reliability electronic apparatus with a simple structure where the input part is included in the display part, by making the keyboard and the display equipment common and by cutting off the external light due to touch of the operator onto segments of the display equipment and by detecting this cutting-off as an input.
CONSTITUTION: Segments SAWSG indicate one digit of a light emission diode display equipment respectively, and photo detection elements PAWPG consist of photo transistors and are constituted by arranging then in respective segments. Thus, when the operator touches segment SB, element PB detects cutting-off of the external light and is operated to input numberic 1. Output PH of element PA, etc., included display equipment DIS is inputted to input part INP, and meanwhile, input part INP inverts the output driving signal of the CPU by inverter INV to detect a correct input at a non-driving time. Then, the output of INP is led to control part CONT, and segment information is coded to a binary-coded decimal and is inputted to the CPU by FFs, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP3038279A 1979-03-15 1979-03-15 Small-size electronic apparatus Pending JPS55123725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3038279A JPS55123725A (en) 1979-03-15 1979-03-15 Small-size electronic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3038279A JPS55123725A (en) 1979-03-15 1979-03-15 Small-size electronic apparatus

Publications (1)

Publication Number Publication Date
JPS55123725A true JPS55123725A (en) 1980-09-24

Family

ID=12302328

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3038279A Pending JPS55123725A (en) 1979-03-15 1979-03-15 Small-size electronic apparatus

Country Status (1)

Country Link
JP (1) JPS55123725A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4975023A (en) * 1972-11-20 1974-07-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4975023A (en) * 1972-11-20 1974-07-19

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