JPS5470087A - Counter circuit with 12 hour display/24 hour display changeover function - Google Patents
Counter circuit with 12 hour display/24 hour display changeover functionInfo
- Publication number
- JPS5470087A JPS5470087A JP13741377A JP13741377A JPS5470087A JP S5470087 A JPS5470087 A JP S5470087A JP 13741377 A JP13741377 A JP 13741377A JP 13741377 A JP13741377 A JP 13741377A JP S5470087 A JPS5470087 A JP S5470087A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- counter circuit
- hour display
- hour
- counter
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G3/00—Producing timing pulses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Indicating Measured Values (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
PURPOSE:To achieve the simplification of circuit constitution by making use of a ring type counter. CONSTITUTION:The counter circuit is constituted by a decimal counter crcuit 1 and binary counter circuits 2, 3 so that the hour pulses outputted from an ''hour'' pulse generating circuit 6 are counted. Then, when 12-hour display is performed by changing over a scale-of-12/24 control circuit 4 by the signal from a 12-hour display/24-hour display selection circuit 7, the duodecimal counter circuit which indicates the order of ''1'' with the decimal counter circuit 1 and the order of ''10'' with the binary counter circuit 2 is constituted and ''AN/PM'' is indicated by the binary counter circuit 3. If 24-hour display is selected, the decimal counter circuit 1 operates as a decimal counter circuit indicating the lower digits of the ''hour'' and the binary counter circuits 2, 3 operate as a counter circuit indicating the upper digits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13741377A JPS5470087A (en) | 1977-11-15 | 1977-11-15 | Counter circuit with 12 hour display/24 hour display changeover function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13741377A JPS5470087A (en) | 1977-11-15 | 1977-11-15 | Counter circuit with 12 hour display/24 hour display changeover function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5470087A true JPS5470087A (en) | 1979-06-05 |
Family
ID=15198045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13741377A Pending JPS5470087A (en) | 1977-11-15 | 1977-11-15 | Counter circuit with 12 hour display/24 hour display changeover function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5470087A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51100766A (en) * | 1975-01-31 | 1976-09-06 | Ebauches Sa |
-
1977
- 1977-11-15 JP JP13741377A patent/JPS5470087A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51100766A (en) * | 1975-01-31 | 1976-09-06 | Ebauches Sa |
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