KR930003007B1 - 경과시간 숫자 표시용 타이머회로 - Google Patents
경과시간 숫자 표시용 타이머회로 Download PDFInfo
- Publication number
- KR930003007B1 KR930003007B1 KR1019900013750A KR900013750A KR930003007B1 KR 930003007 B1 KR930003007 B1 KR 930003007B1 KR 1019900013750 A KR1019900013750 A KR 1019900013750A KR 900013750 A KR900013750 A KR 900013750A KR 930003007 B1 KR930003007 B1 KR 930003007B1
- Authority
- KR
- South Korea
- Prior art keywords
- timer
- timer circuit
- terminal
- circuit
- variable resistor
- 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.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
- G06F1/14—Time supervision arrangements, e.g. real time clock
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Predetermined Time Intervals (AREA)
Abstract
Description
Claims (1)
- 타이머 IC(IC1)에 연결된 가변저항(VR1)으로 설정시간을 조정하고 타이머 IC(IC1)에 의해 제어되는 SCR(10)과 연동하는 발광다이오드(L2)로서 지연시간을 표시하는 타이머 회로(400)에 있어서, 펄스 발생용 IC(IC4)에 연결된 가변저항(VRA) 및 콘덴서(C1)에 의해 단위별 발진주파수를 출력하는 발진회로부(100)와, 상기 발진회로부(100)의 출력을 BCD카운터(IC2)로 10분주 카운트한 펄스를 세븐 세그먼트 구동기(IC3)에 보냄과 동시에 트랜지스터(Tr1∼Tr3)에 타이밍 신호로 보내는 세그먼트 구동부(200)와, 타이머회로(400)의 동작상태에 따라 상기 세그먼트 구동부(200)의 BCD 카운터(IC2)의 동작을 제어하는 트랜지스터(Tr4)와, 세그먼트 구동부(200)에 의해 경과시간을 표시하며 설정시간에 도달하면 계수동작을 정지하는 경과시간 표시부(300)를 포함하여 구성된 것을 특징으로 하는 경과시간 숫자 표시용 타이머 회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900013750A KR930003007B1 (ko) | 1990-08-31 | 1990-08-31 | 경과시간 숫자 표시용 타이머회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900013750A KR930003007B1 (ko) | 1990-08-31 | 1990-08-31 | 경과시간 숫자 표시용 타이머회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920005476A KR920005476A (ko) | 1992-03-28 |
KR930003007B1 true KR930003007B1 (ko) | 1993-04-16 |
Family
ID=19303093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900013750A Expired - Fee Related KR930003007B1 (ko) | 1990-08-31 | 1990-08-31 | 경과시간 숫자 표시용 타이머회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR930003007B1 (ko) |
-
1990
- 1990-08-31 KR KR1019900013750A patent/KR930003007B1/ko not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR920005476A (ko) | 1992-03-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19900831 |
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PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19900831 Comment text: Request for Examination of Application |
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PG1501 | Laying open of application | ||
G160 | Decision to publish patent application | ||
PG1605 | Publication of application before grant of patent |
Comment text: Decision on Publication of Application Patent event code: PG16051S01I Patent event date: 19930320 |
|
E701 | Decision to grant or registration of patent right | ||
PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19930625 |
|
GRNT | Written decision to grant | ||
PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 19930921 Patent event code: PR07011E01D |
|
PR1002 | Payment of registration fee |
Payment date: 19930921 End annual number: 3 Start annual number: 1 |
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PR1001 | Payment of annual fee |
Payment date: 19951228 Start annual number: 4 End annual number: 4 |
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PR1001 | Payment of annual fee |
Payment date: 19961226 Start annual number: 5 End annual number: 5 |
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PR1001 | Payment of annual fee |
Payment date: 19971227 Start annual number: 6 End annual number: 6 |
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PR1001 | Payment of annual fee |
Payment date: 19990922 Start annual number: 7 End annual number: 7 |
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FPAY | Annual fee payment |
Payment date: 20000331 Year of fee payment: 8 |
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PR1001 | Payment of annual fee |
Payment date: 20000331 Start annual number: 8 End annual number: 8 |
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LAPS | Lapse due to unpaid annual fee | ||
PC1903 | Unpaid annual fee |