CN201569876U - Touch type count down device - Google Patents
Touch type count down device Download PDFInfo
- Publication number
- CN201569876U CN201569876U CN200920317048XU CN200920317048U CN201569876U CN 201569876 U CN201569876 U CN 201569876U CN 200920317048X U CN200920317048X U CN 200920317048XU CN 200920317048 U CN200920317048 U CN 200920317048U CN 201569876 U CN201569876 U CN 201569876U
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- CN
- China
- Prior art keywords
- potential pin
- down device
- chip microcomputer
- singlechip
- type count
- 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
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- Measurement Of Predetermined Time Intervals (AREA)
Abstract
The utility model discloses a touch type count down device, including a singlechip, a timer, a power supply and a loudspeaker are connected with the singlechip respectively, and the singlechip is respectively provided with a high potential pin and a low potential pin. The singlechip is a STC11F32XE singlechip, and the voltage of the power supply is 3V. according to the touch type count down device, a high potential pin and a low potential pin are guided from I/O ports of the singlechip respectively, when a hand touches the high potential pin and the low potential pin, a signal of pulling the high potential pin is transmitted to the low potential pin by means of electric resistance of the fingers so as to form a loop to trigger to detect, the timer starts to count down. The utility model has advantages of simple structure, high sensitivity, and easy use.
Description
Technical field
The utility model belongs to the single-chip microcomputer applied technical field, relates to a kind of touch-type count-down device.
Background technology
Common electronic timer all is all just to carry out timing by pressing the timing button in timing, and structure is very single.
Summary of the invention
The purpose of this utility model provides a kind of touch-type count-down device, just can detect timing by touching pin.
The technical scheme that the utility model adopted is, a kind of touch-type count-down device comprises single-chip microcomputer, and timer, power supply, loudspeaker link to each other with single-chip microcomputer respectively, draw noble potential pin and electronegative potential pin on the single-chip microcomputer respectively.
Feature of the present utility model also is,
Single-chip microcomputer adopts the STC11F32XE single-chip microcomputer.
Power source voltage is 3V.
A kind of touch-type count-down device of the present utility model, on the I/O of single-chip microcomputer mouth, draw noble potential pin and electronegative potential pin respectively, when people touch noble potential pin and electronegative potential pin together with hand, utilize the resistance on the finger, the signal that makes the noble potential pin recommend output is passed to the electronegative potential pin, thereby form the loop detection trigger, timer just begins countdown.Simple in structure, highly sensitive, easy to use.
Description of drawings
Fig. 1 is the structural representation of a kind of touch-type count-down device of the utility model.
Wherein, 1. single-chip microcomputer, 2. timer, 3. power supply, 4. loudspeaker, 5. noble potential pin, 6. electronegative potential pin.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The circuit structure of a kind of touch-type count-down device of the utility model as shown in Figure 1, comprises single-chip microcomputer 1, and timer 2, power supply 3, loudspeaker 4 link to each other with single-chip microcomputer 1 respectively, draws two pins on single-chip microcomputer 1, is respectively noble potential pin 5 and electronegative potential pin 6.
Wherein, single-chip microcomputer 1 adopts the STC11F32XE single-chip microcomputer, and the voltage of power supply 3 is 3V.
The course of work of the utility model touch-type count-down device is, STC11F32XE single-chip microcomputer 1 recommend the one high and one low formation loop that output directly utilizes the I/O mouth.On the I/O of single-chip microcomputer 1 mouth, draw noble potential pin 5 and electronegative potential pin 6 respectively, when people touch noble potential pin 5 with electronegative potential pin 6 together with hand, utilize the resistance on the finger, the signal that makes noble potential pin 5 recommend output is passed to electronegative potential pin 6, thereby form the loop detection trigger, timer 2 just begins countdown.
The utility model touch-type count-down device is simple in structure, and is highly sensitive, easy to use.
Claims (3)
1. a touch-type count-down device is characterized in that, comprises single-chip microcomputer (1), and timer (2), power supply (3), loudspeaker (4) link to each other with single-chip microcomputer (1) respectively, draws noble potential pin (5) and electronegative potential pin (6) on the described single-chip microcomputer (1) respectively.
2. touch-type count-down device according to claim 1 is characterized in that, described single-chip microcomputer (1) adopts the STC11F32XE single-chip microcomputer.
3. touch-type count-down device according to claim 1 is characterized in that, the voltage of described power supply (3) is 3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920317048XU CN201569876U (en) | 2009-12-10 | 2009-12-10 | Touch type count down device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920317048XU CN201569876U (en) | 2009-12-10 | 2009-12-10 | Touch type count down device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201569876U true CN201569876U (en) | 2010-09-01 |
Family
ID=42662173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920317048XU Expired - Fee Related CN201569876U (en) | 2009-12-10 | 2009-12-10 | Touch type count down device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201569876U (en) |
-
2009
- 2009-12-10 CN CN200920317048XU patent/CN201569876U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20101210 |