CN206517391U - A kind of button shows expanded circuit - Google Patents
A kind of button shows expanded circuit Download PDFInfo
- Publication number
- CN206517391U CN206517391U CN201621186424.2U CN201621186424U CN206517391U CN 206517391 U CN206517391 U CN 206517391U CN 201621186424 U CN201621186424 U CN 201621186424U CN 206517391 U CN206517391 U CN 206517391U
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- China
- Prior art keywords
- string
- digit chip
- chip
- button
- digit
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- 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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- Led Devices (AREA)
- Control By Computers (AREA)
Abstract
The utility model is related to a kind of expand display circuit, the device include string turn and digit chip, button, charactron, LED and and interface, serial input is switched into parallel output, expand, digital-scroll technique and LED light using digit chip 74HC164.8 interruption buttons are constituted with a piece of 74HC164 and single-chip microcomputer 1 middle fracture, drive two digital pipes to be used as display with 2 74HC164, then drive 8 LEDs to be indicated as working condition with 1 74HC164.More digit chips can also be extended as needed, extend more buttons and display.
Description
Technical field
The utility model is related to singlechip technology, turns the skill of simultaneously digit chip extension display and button in particular with string
Art field.
Background technology
Single-chip microcomputer is superior due to control performance, is widely used in every field.Usual single-chip microcomputer pin is few, generally to extend
IO shows or button that some special chips extension I/O circuit and schematic diagram are complicated, application flower more time, the practicality
A kind of commonly used digital chip extension display of new application and button, solve the inconvenience that I/O expansion uses special chip.
The content of the invention
The utility model extends digital-scroll technique and button using a kind of ordinary numbers chip, solves I/O expansion using complexity
The deficiency of special chip.
The utility model includes string and turned and digit chip（1）, button（2）, charactron（3）, LED light（4）, interface
（5）；String turns and digit chip（1）Including four 74HC164, button（2）Including 8 buttons, LED light（4）Including 8 groups
LED；First string turns and digit chip 74HC164 (1-1) 8 buttons of connection, and the second string turns and digit chip 74HC164 (1-
2) the first charactron is connected（3-1）, the 3rd string turn and digit chip 74HC164 (1-3) the second charactrons of connection（3-2）, the 4th
String turns and digit chip 74HC164 (1-4) 8 groups of LEDs of connection.String turns and digit chip（1）With four 74HC164, four
74HC164 is concatenated, and it is serial number that four 74HC164 pin 1,2, which links together as serial data input, pin 13,
According to output end；First string turns and digit chip 74HC164 (1-1) serial data input is connected to interface（5）P30,
A string turns and digit chip 74HC164 (1-1) serial data output terminal connect the second string and turned and digit chip 74HC164 (1-2)
Serial data input, the second string turns and digit chip 74HC164 (1-2) serial data output terminal connects the 3rd string and turned and digital core
Piece 74HC164 (1-3) serial data input, the 3rd string turns and digit chip 74HC164 (1-3) serial data output terminal connects
4th string turns simultaneously digit chip 74HC164 (1-4) serial data input；Four 74HC164 pin 8 is that serial clock is defeated
Enter end.LED light（4）Including 8 groups of LEDs D1, D2, D3, D4, D5, D6, D7, D8, each LED is equipped with a current limliting electricity
Resistance is respectively R1, R2, R3, R4, R5, R6, R7, R8.String turns and digit chip（1）Four 74HC164 pin 3,4,5,6,
10th, 11,12,13 be 8 parallel outputs mouthful, and the first string turns and digit chip 74HC164 (1-1) parallel output mouthful is connected respectively
To button k1, k2, k3, k4, k5, k6, k7, k8；Second string turns simultaneously digit chip 74HC164 (1-2) parallel output mouthful respectively
Connect the first charactron（3-1）Field dp, g, f, e, d, c, b, a, the 3rd string turn and digit chip 74HC164's (1-3) and
Row delivery outlet connects the second charactron respectively（3-2）Field dp, g, f, e, d, c, b, a；3rd string turns and digit chip
74HC164 (1-3) parallel output mouthful meets LED D1, D2, D3, D4, D5, D6, D7, D8 respectively.Interface（5）Including three IO
Mouth, respectively P30, P31, P32, these three I/O ports are connected with the serial communication port and outer middle fracture of MCS51 single-chip microcomputers, connect respectively
Mouthful（5）P30 connections first string turn and digit chip 74HC164 (1-1) pin 1,2, interface（5）P31 be connected to four
74HC164 pin 8, interface（5）P32 be connected to button（2）8 buttons.
The innovation of the utility model is to extend digital-scroll technique and keyboard, principle letter using a kind of ordinary numbers chip
Single, cost is low, and it is easy to realize.
Brief description of the drawings
Fig. 1 is utility model circuit theory diagrams, in Fig. 1,1 be string turn and digit chip, 2 be button, 3 be charactron, 4 be
LED light, 5 are interface.Fig. 2 is keyboard schematic diagram, and k1, k2, k3, k4, k5, k6, k7, k8 are conventional push button.
Embodiment
The utility model includes string and turned and digit chip（1）, button（2）, charactron（3）, LED light（4）, interface
（5）；String turns and digit chip（1）Including four 74HC164, button（2）Including 8 buttons, LED light（4）Including 8 groups
LED；First string turns and digit chip 74HC164 (1-1) 8 buttons of connection, and the second string turns and digit chip 74HC164 (1-
2) the first charactron is connected（3-1）, the 3rd string turn and digit chip 74HC164 (1-3) the second charactrons of connection（3-2）, the 4th
String turns and digit chip 74HC164 (1-4) 8 groups of LEDs of connection.String turns and digit chip（1）With four 74HC164, four
74HC164 is concatenated, and it is serial number that four 74HC164 pin 1,2, which links together as serial data input, pin 13,
According to output end；First string turns and digit chip 74HC164 (1-1) serial data input is connected to interface（5）P30,
A string turns and digit chip 74HC164 (1-1) serial data output terminal connect the second string and turned and digit chip 74HC164 (1-2)
Serial data input, the second string turns and digit chip 74HC164 (1-2) serial data output terminal connects the 3rd string and turned and digital core
Piece 74HC164 (1-3) serial data input, the 3rd string turns and digit chip 74HC164 (1-3) serial data output terminal connects
4th string turns simultaneously digit chip 74HC164 (1-4) serial data input；Four 74HC164 pin 8 is that serial clock is defeated
Enter end.LED light（4）Including 8 groups of LEDs D1, D2, D3, D4, D5, D6, D7, D8, each LED is equipped with a current limliting electricity
Resistance is respectively R1, R2, R3, R4, R5, R6, R7, R8.String turns and digit chip（1）Four 74HC164 pin 3,4,5,6,
10th, 11,12,13 be 8 parallel outputs mouthful, and the first string turns and digit chip 74HC164 (1-1) parallel output mouthful is connected respectively
To button k1, k2, k3, k4, k5, k6, k7, k8；Second string turns simultaneously digit chip 74HC164 (1-2) parallel output mouthful respectively
Connect the first charactron（3-1）Field dp, g, f, e, d, c, b, a, the 3rd string turn and digit chip 74HC164's (1-3) and
Row delivery outlet connects the second charactron respectively（3-2）Field dp, g, f, e, d, c, b, a；3rd string turns and digit chip
74HC164 (1-3) parallel output mouthful meets LED D1, D2, D3, D4, D5, D6, D7, D8 respectively.Interface（5）Including three IO
Mouth, respectively P30, P31, P32, these three I/O ports are connected with the serial communication port and outer middle fracture of MCS51 single-chip microcomputers, connect respectively
Mouthful（5）P30 connections first string turn and digit chip 74HC164 (1-1) pin 1,2, interface（5）P31 be connected to four
74HC164 pin 8, interface（5）P32 be connected to button（2）8 buttons.
In the present embodiment, string turns and digit chip（1）74HC164, it would however also be possible to employ similar serial input-parallel output
Digit chip, such as 74LS164, CD4094.
In the present embodiment, string turns and digit chip（1）A piece of to do button use using four 74HC164, two panels is done digital aobvious
Show use, it is a piece of to do LED driving use, can also be more than four or less than four, according to the number of button, digital-scroll technique and LED
Measurer body determines that string turns and digit chip（1）Quantity.Such as：The times are shown with four 74HC164, it is a piece of to do button, it is a piece of
LED driving is done, so string turns and digit chip（1）It is accomplished by 6.
Claims (5)
1. a kind of button shows expanded circuit, it is characterized in that turning including string and digit chip（1）, button（2）, charactron（3）、
LED light（4）, interface（5）；String turns and digit chip（1）Including four 74HC164, button（2）Including 8 buttons, LED
Indicator lamp（4）Including 8 groups of LEDs；First string turns and digit chip 74HC164 (1-1) 8 buttons of connection, and the second string turns and number
Word chip 74HC164 (1-2) the first charactrons of connection（3-1）, the 3rd string turn simultaneously digit chip 74HC164 (1-3) connections second
Charactron（3-2）, the 4th string turn and digit chip 74HC164 (1-4) 8 groups of LEDs of connection.
2. a kind of button according to claim 1 shows expanded circuit, it is characterized in that string turns and digit chip（1）With four
Piece 74HC164, four 74HC164 are concatenated, four 74HC164 pin 1,2 link together for serial data input,
Pin 13 is serial data output terminal；First string turn and digit chip 74HC164 (1-1) serial data input, which are connected to, to be connect
Mouthful（5）P30, first string turn and digit chip 74HC164 (1-1) serial data output terminal connect the second string turn and digit chip
74HC164 (1-2) serial data input, the second string turns and digit chip 74HC164 (1-2) serial data output terminal connects the
Three strings turn simultaneously digit chip 74HC164 (1-3) serial data input, and the 3rd string turns and digit chip 74HC164 (1-3) strings
Row data output end connects the serial data input that the 4th string turns simultaneously digit chip 74HC164 (1-4)；Four strings turn and digital core
Piece 74HC164 pin 8 is serial clock input.
3. a kind of button according to claim 1 shows expanded circuit, it is characterized in that LED light（4）Including 8 groups of LED
Lamp D1, D2, D3, D4, D5, D6, D7, D8, each LED equipped with a current-limiting resistance be respectively R1, R2, R3, R4, R5, R6,
R7、R8。
4. a kind of button according to claim 1 or 2 or 3 shows expanded circuit, it is characterized in that string turns and digit chip（1）
Four 74HC164 pin 3,4,5,6,10,11,12,13 be 8 parallel outputs mouthful, the first string turns and digit chip
74HC164 (1-1) parallel output mouthful is connected respectively to button k1, k2, k3, k4, k5, k6, k7, k8；Second string turns and numeral
Chip 74HC164 (1-2) parallel output mouthful connects the first charactron respectively（3-1）Field dp, g, f, e, d, c, b, a,
Three strings turn and digit chip 74HC164 (1-3) parallel output mouthful connects the second charactron respectively（3-2）Field dp, g, f,
e、d、c、b、a；3rd string turn and digit chip 74HC164 (1-3) parallel output mouth connect respectively LED D1, D2, D3, D4,
D5、D6、D7、D8。
5. a kind of button according to claim 1 or 2 shows expanded circuit, it is characterized in that interface（5）Including three I/O ports,
Respectively P30, P31, P32, these three I/O ports are connected with the serial communication port and outer middle fracture of MCS51 single-chip microcomputers respectively, interface
（5）P30 connections first string turn and digit chip 74HC164 (1-1) pin 1,2, interface（5）P31 be connected to four
74HC164 pin 8, interface（5）P32 be connected to button（2）8 buttons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186424.2U CN206517391U (en) | 2016-11-04 | 2016-11-04 | A kind of button shows expanded circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186424.2U CN206517391U (en) | 2016-11-04 | 2016-11-04 | A kind of button shows expanded circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517391U true CN206517391U (en) | 2017-09-22 |
Family
ID=59860231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621186424.2U Expired - Fee Related CN206517391U (en) | 2016-11-04 | 2016-11-04 | A kind of button shows expanded circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517391U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148370A (en) * | 2019-05-23 | 2019-08-20 | 福建船政交通职业学院 | A kind of novel scanning circuit |
| CN110286633A (en) * | 2019-08-12 | 2019-09-27 | 傅连海 | A kind of control circuit extending multiple I/O ports using 74HC164 chip |
| CN110444137A (en) * | 2019-08-15 | 2019-11-12 | 重庆川仪速达机电有限公司 | A kind of multidigit nixie tube display driver circuit and its control method |
-
2016
- 2016-11-04 CN CN201621186424.2U patent/CN206517391U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148370A (en) * | 2019-05-23 | 2019-08-20 | 福建船政交通职业学院 | A kind of novel scanning circuit |
| CN110286633A (en) * | 2019-08-12 | 2019-09-27 | 傅连海 | A kind of control circuit extending multiple I/O ports using 74HC164 chip |
| CN110444137A (en) * | 2019-08-15 | 2019-11-12 | 重庆川仪速达机电有限公司 | A kind of multidigit nixie tube display driver circuit and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20211104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |