JPS54140834A - Portable electronic device - Google Patents
Portable electronic deviceInfo
- 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
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
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)
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 |
-
1978
- 1978-04-24 JP JP4904578A patent/JPS54140834A/en active Pending
Cited By (4)
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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