JPS54140834A - Portable electronic device - Google Patents

Portable electronic device

Info

Publication number
JPS54140834A
JPS54140834A JP4904578A JP4904578A JPS54140834A JP S54140834 A JPS54140834 A JP S54140834A JP 4904578 A JP4904578 A JP 4904578A JP 4904578 A JP4904578 A JP 4904578A JP S54140834 A JPS54140834 A JP S54140834A
Authority
JP
Japan
Prior art keywords
data
display
address
circuit
column
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
JP4904578A
Other languages
Japanese (ja)
Inventor
Yuki Tsuruishi
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 Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP4904578A priority Critical patent/JPS54140834A/en
Publication of JPS54140834A publication Critical patent/JPS54140834A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify the input and output of data to and from a portable electronic device equipped with a liquid-crystal display unit and a data memory, by using a multi-digit and multi-column dot-matrix liquid crystal.
CONSTITUTION: The dot-matrix liquid crystal, having several display columns, displays a title and data in parallel from their heads, for example, and then changes all digits of the data part a few seconds later to display data which can not be displayed firstly. To be concrete, a selective command from external terminal 12 controls circuit 11 which selects either forward or backward display and the command signal is sent out to memory address control circuit 19 and display control circuit 28. In case of three-column display, circuit 19 increases or decreases the address number by one or two so that data of an address two addresses before or after the address will be displayed at the highest column. Further, circuit 28 also changes the data flow direction.
COPYRIGHT: (C)1979,JPO&Japio
JP4904578A 1978-04-24 1978-04-24 Portable electronic device Pending JPS54140834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4904578A JPS54140834A (en) 1978-04-24 1978-04-24 Portable electronic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4904578A JPS54140834A (en) 1978-04-24 1978-04-24 Portable electronic device

Publications (1)

Publication Number Publication Date
JPS54140834A true JPS54140834A (en) 1979-11-01

Family

ID=12820104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4904578A Pending JPS54140834A (en) 1978-04-24 1978-04-24 Portable electronic device

Country Status (1)

Country Link
JP (1) JPS54140834A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58140792A (en) * 1982-02-15 1983-08-20 株式会社日立製作所 Semiconductor integration circuit for liquid crystal display
JPS60205428A (en) * 1984-03-30 1985-10-17 Hitachi Ltd Liquid crystal display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58140792A (en) * 1982-02-15 1983-08-20 株式会社日立製作所 Semiconductor integration circuit for liquid crystal display
JPH0467191B2 (en) * 1982-02-15 1992-10-27 Hitachi Seisakusho Kk
JPS60205428A (en) * 1984-03-30 1985-10-17 Hitachi Ltd Liquid crystal display device
JPH0548884B2 (en) * 1984-03-30 1993-07-22 Hitachi Ltd

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