JPS5492358A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5492358A
JPS5492358A JP15929077A JP15929077A JPS5492358A JP S5492358 A JPS5492358 A JP S5492358A JP 15929077 A JP15929077 A JP 15929077A JP 15929077 A JP15929077 A JP 15929077A JP S5492358 A JPS5492358 A JP S5492358A
Authority
JP
Japan
Prior art keywords
terminal
circuit
terminals
input
switch
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
JP15929077A
Other languages
Japanese (ja)
Inventor
Takashi Ishida
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments 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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP15929077A priority Critical patent/JPS5492358A/en
Publication of JPS5492358A publication Critical patent/JPS5492358A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To reduce the number of terminals by providing terminals which serve both as input and output permitting changing over with a switch.
CONSTITUTION: When a reset switch 5 is OFF, the control terminal of the transmission gate TG of a changeover circuit 3 is pulled down to connect input terminal 4 to an exclusive-OR circuit G1. The test signal, etc. from the terminal 4 are then applied to a frequency dividing circuit 6. When the switch 5 is turned ON, the gate TG is pulled up to connect the terminal 4 to a frequency divider 2. The terminal then becomes output terminal, thus one terminal is selectively changed over and used for both input and output. Hence, the number of terminals of an IC circuit for watch may be reduced.
COPYRIGHT: (C)1979,JPO&Japio
JP15929077A 1977-12-29 1977-12-29 Electronic watch Pending JPS5492358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15929077A JPS5492358A (en) 1977-12-29 1977-12-29 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15929077A JPS5492358A (en) 1977-12-29 1977-12-29 Electronic watch

Publications (1)

Publication Number Publication Date
JPS5492358A true JPS5492358A (en) 1979-07-21

Family

ID=15690555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15929077A Pending JPS5492358A (en) 1977-12-29 1977-12-29 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5492358A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154616U (en) * 1983-03-31 1984-10-17 三洋電機株式会社 digital display equipment
JPS61234376A (en) * 1985-04-10 1986-10-18 Nec Corp Signal testing circuit
JPS62116271A (en) * 1985-11-15 1987-05-27 Fujitsu Ltd Test circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154616U (en) * 1983-03-31 1984-10-17 三洋電機株式会社 digital display equipment
JPS61234376A (en) * 1985-04-10 1986-10-18 Nec Corp Signal testing circuit
JPS62116271A (en) * 1985-11-15 1987-05-27 Fujitsu Ltd Test circuit
JPH0644031B2 (en) * 1985-11-15 1994-06-08 富士通株式会社 Test circuit

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