JPS54116979A - Sound stop watch - Google Patents
Sound stop watchInfo
- Publication number
- JPS54116979A JPS54116979A JP2463978A JP2463978A JPS54116979A JP S54116979 A JPS54116979 A JP S54116979A JP 2463978 A JP2463978 A JP 2463978A JP 2463978 A JP2463978 A JP 2463978A JP S54116979 A JPS54116979 A JP S54116979A
- Authority
- JP
- Japan
- Prior art keywords
- counter
- time
- register
- sound
- fff
- 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 provide a stop watch capable of informing the time in sounds by applying the counted values of a time counter for preset time intervals to a register to generate address signals so that the sound quantitized data read out of a memory.
CONSTITUTION: When a key SK is operated, an AND gate A1 is opened, and the reset output of an FFF1 becomes a down counting signal so that a time counter TC count down the initial value, which is preset by a register R, in rsponse to each time signal from a frequency divider DV. When the initial preset time is reached, starting signals are generated through a judging circuit JTC from a speaker SP1, and the counter TC counts up in response to the set output of the FFF1. The outed value of the counter TC counts up in response to the set output of the FFF1. The outed value of the counter TC is counted for each preset time interval by a register B so that address signals are generated through a buffer register D from a sound initial address circuit CC. As a result, the sound quantitized data are read o-t of a ROMRM so that they are informed in sounds from a speaker SP2 during the period while the elapsed time reoperates the switch SK.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2463978A JPS54116979A (en) | 1978-03-03 | 1978-03-03 | Sound stop watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2463978A JPS54116979A (en) | 1978-03-03 | 1978-03-03 | Sound stop watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54116979A true JPS54116979A (en) | 1979-09-11 |
Family
ID=12143693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2463978A Pending JPS54116979A (en) | 1978-03-03 | 1978-03-03 | Sound stop watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54116979A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56122983U (en) * | 1980-02-19 | 1981-09-18 |
-
1978
- 1978-03-03 JP JP2463978A patent/JPS54116979A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56122983U (en) * | 1980-02-19 | 1981-09-18 | ||
JPS6245193Y2 (en) * | 1980-02-19 | 1987-12-02 |
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