CN203812233U

CN203812233U - Bus communication-based multi-computer keyboard managing device

Info

Publication number: CN203812233U
Application number: CN201420142524.XU
Authority: CN
Inventors: 吴金舟
Original assignee: Jiangxi University of Technology
Current assignee: Jiangxi University of Technology
Priority date: 2014-03-27
Filing date: 2014-03-27
Publication date: 2014-09-03
Anticipated expiration: 2024-03-27

Abstract

The utility model discloses a bus communication-based multi-computer keyboard managing device, comprising a USB (universal serial bus) interface (U2) and a single chip microcomputer (U1); the USB interface (U2) is connected with a first triode (Q1) and a second triode (Q2) by a voltage stabilizing diode (D1); the first triode (Q1) and the second triode (Q2) are respectively connected with a first keyboard interface (K1) and a second keyboard interface (K2); the first triode (Q1), the second triode (Q2), the first keyboard interface (K1) and the second keyboard interface (K2) are all connected with the single chip microcomputer (U1); the single chip microcomputer (U1) is connected with a first light emitting diode (LED1) and a second light emitting diode (LED2); the single chip microcomputer (U1) is also connected with an oscillation circuit formed by a crystal oscillator (Y1), a second capacitor (C2) and a third capacitor (C3). The resource of USB interfaces is saved to a great extent, the connection is simple and convenience is brought to people to a great extent.

Description

A kind of multicomputer Keyboard management device based on bus communication

Technical field

The utility model relates to a kind of computer keyboard management devices, is specifically related to a kind of multicomputer Keyboard management device based on bus communication.

Background technology

Along with improving constantly of socioeconomic development and people's living standard, people have progressed into the informationalized epoch, and a large amount of messaging devices are used by people, and especially computer more and more be unable to do without people's life; At present increasing application needs the input of muliple keyboards suitching type, it is muliple keyboards access, but current system only responds one and specifies keyboard, for example digital classroom teaching application, this time, control the usb hub of function by band and can realize, but the input resource that each keyboard will consume a computing machine, and line is comparatively complicated, thereby bring great trouble to people's use.

Summary of the invention

For addressing the above problem, the utility model proposes a kind of simple in structure, practical, can be on data bus the multiple keyboards of carry, and the multicomputer Keyboard management device based on bus communication that can the keyboard on data chief inspector carries out convenient switching to carry.

Multicomputer Keyboard management device based on bus communication of the present utility model, comprises USB interface (U2) and single-chip microcomputer (U1); Described USB interface (U2) is connected with the first triode (Q1), the second triode (Q2) by voltage stabilizing diode (D1); Described the first triode (Q1), the second triode (Q2) are connected with respectively the first keyboard interface (K1) and the second keyboard interface (K2); Described the first triode (Q1), the second triode (Q2), the first keyboard interface (K1) and the second keyboard interface (K2) are all connected with single-chip microcomputer (U2); Described single-chip microcomputer is connected with the first light emitting diode (LED1) and the second light emitting diode (LED2); Described single-chip microcomputer (U2) is also connected with the oscillatory circuit being made up of crystal oscillator (Y1), the second electric capacity (C2) and the 3rd electric capacity (C3).

Further, described single-chip microcomputer (U1) is 12C5A60S2 single-chip microcomputer.

Further, described the first keyboard interface (K1) and the second keyboard interface (K2) are female mouthful of USB.

Further, described stabilivolt (D1) is 5V stabilivolt.

Further, described the first triode (Q1) and the second triode (Q2) are NPN type triode.

Further, described crystal oscillator (Y1) is 12M crystal oscillator.

Further, described and electric capacity is 30PF electric capacity.

The utility model compared with prior art, it has following beneficial effect: one of the present utility model is simple in structure, practical, can be on data bus the multiple keyboards of carry, and the multicomputer Keyboard management device based on bus communication that can the keyboard on data chief inspector carries out convenient switching to carry; The utility model is in the time of work, when need to be when being connected on keyboard on the first keyboard interface access computer, Single-chip Controlling the first triode conducting, controls the second triode cut-off, and data are sent into computing machine by USB interface, light the first light emitting diode simultaneously; When need to be when being connected on keyboard on the second keyboard interface access computer, Single-chip Controlling the first triode cut-off, controls the second triode conducting, and data is sent into computing machine by USB interface, lights the second light emitting diode simultaneously; The utility model has been saved the resource of USB interface to a great extent, dynamically controlled the switching of two keyboards simultaneously, and line is simple, brings more convenient to a great extent.

Brief description of the drawings

Fig. 1 is circuit theory diagrams of the present utility model.

In figure: U1, single-chip microcomputer; U2, USB interface; D1, stabilivolt; Y1, crystal oscillator; C2, the second electric capacity; C3, the 3rd electric capacity; Q1, the first triode; Q2, the second triode; K1, the first keyboard interface; K2, the second keyboard interface; LED1, the first light emitting diode; LED2, the second light emitting diode.

Embodiment

A kind of multicomputer Keyboard management device based on bus communication as shown in Figure 1, comprises USB interface (U2) and single-chip microcomputer (U1); Described USB interface (U2) is connected with the first triode (Q1), the second triode (Q2) by voltage stabilizing diode (D1); Described the first triode (Q1), the second triode (Q2) are connected with respectively the first keyboard interface (K1) and the second keyboard interface (K2); Described the first triode (Q1), the second triode (Q2), the first keyboard interface (K1) and the second keyboard interface (K2) are all connected with single-chip microcomputer (U2); Described single-chip microcomputer is connected with the first light emitting diode (LED1) and the second light emitting diode (LED2); Described single-chip microcomputer (U2) is also connected with the oscillatory circuit being made up of crystal oscillator (Y1), the second electric capacity (C2) and the 3rd electric capacity (C3).

Wherein, described single-chip microcomputer (U1) is 12C5A60S2 single-chip microcomputer; Described the first keyboard interface (K1) and the second keyboard interface (K2) are female mouthful of USB; Described stabilivolt (D1) is 5V stabilivolt; Described the first triode (Q1) and the second triode (Q2) are NPN type triode; Described crystal oscillator (Y1) is 12M crystal oscillator; Described the second electric capacity (C2) and the 3rd electric capacity (C3) are 30PF electric capacity.

One of the present utility model is simple in structure, practical, can be on data bus the multiple keyboards of carry, and the multicomputer Keyboard management device based on bus communication that can the keyboard on data chief inspector carries out convenient switching to carry; The utility model is in the time of work, when need to be when being connected on keyboard on the first keyboard interface access computer, Single-chip Controlling the first triode conducting, controls the second triode cut-off, and data are sent into computing machine by USB interface, light the first light emitting diode simultaneously; When need to be when being connected on keyboard on the second keyboard interface access computer, Single-chip Controlling the first triode cut-off, controls the second triode conducting, and data is sent into computing machine by USB interface, lights the second light emitting diode simultaneously; The utility model has been saved the resource of USB interface to a great extent, dynamically controlled the switching of two keyboards simultaneously, and line is simple, brings more convenient to a great extent.

Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.

Claims

1. the multicomputer Keyboard management device based on bus communication, is characterized in that: comprise USB interface (U2) and single-chip microcomputer (U1); Described USB interface (U2) is connected with the first triode (Q1), the second triode (Q2) by voltage stabilizing diode (D1); Described the first triode (Q1), the second triode (Q2) are connected with respectively the first keyboard interface (K1) and the second keyboard interface (K2); Described the first triode (Q1), the second triode (Q2), the first keyboard interface (K1) and the second keyboard interface (K2) are all connected with single-chip microcomputer (U2); Described single-chip microcomputer is connected with the first light emitting diode (LED1) and the second light emitting diode (LED2); Described single-chip microcomputer (U2) is also connected with the oscillatory circuit being made up of crystal oscillator (Y1), the second electric capacity (C2) and the 3rd electric capacity (C3).

2. the multicomputer Keyboard management device based on bus communication according to claim 1, is characterized in that: described single-chip microcomputer (U1) is 12C5A60S2 single-chip microcomputer.

3. the multicomputer Keyboard management device based on bus communication according to claim 1, is characterized in that: described the first keyboard interface (K1) and the second keyboard interface (K2) are female mouthful of USB.

4. the multicomputer Keyboard management device based on bus communication according to claim 1, is characterized in that: described stabilivolt (D1) is 5V stabilivolt.

5. the multicomputer Keyboard management device based on bus communication according to claim 1, is characterized in that: described the first triode (Q1) and the second triode (Q2) are NPN type triode.

6. the multicomputer Keyboard management device based on bus communication according to claim 1, is characterized in that: described crystal oscillator (Y1) is 12M crystal oscillator.

7. the multicomputer Keyboard management device based on bus communication according to claim 1, is characterized in that: described the second electric capacity (C2) and the 3rd electric capacity (C3) are 30PF electric capacity.