CN202694641U

CN202694641U - Novel portable three-in-one one-chip microcomputer teaching brassboard

Info

Publication number: CN202694641U
Application number: CN 201220101973
Authority: CN
Inventors: 张启升; 邓明; 王琪; 张启卯; 郝宾宾; 雷涛
Original assignee: China University of Geosciences Beijing
Current assignee: China University of Geosciences; China University of Geosciences Beijing
Priority date: 2012-03-19
Filing date: 2012-03-19
Publication date: 2013-01-23
Anticipated expiration: 2022-03-19

Abstract

The invention relate to a novel portable three-in-one one-chip microcomputer teaching brassboard, which comprises an USB wire composed of a set power line, a download wire and a PC machine communication serial port wire, a P89V51RD2 one-chip microcomputer, a 12864 lattice liquid crystal LCD, a 8-site parallel DA converter DAC0832, a LED marquee, a 4-site seven-segment common anode nixie tube, a passive buzzer, a serial FLASH memory 24C08, a serial digital temperature sensor DS18B20, a 24-site binary channel AD converter CS 5550 and a 4*3 row/column scan keyboard; wherein the P89V51RD2 one-chip microcomputer is the core of the whole brassboard, and is connected to other components through a P0 port, a P1.3 port, a P3.4 port, a P3.5 port, a P3.7 port, a P2 port or a P1 port. The novel portable three-in-one one-chip microcomputer teaching brassboard has the advantages of convenient carrying, improved functions and wide application scope.

Description

A kind of Single Chip Computer Teaching Experiment plate of novel portable three lines unification

Affiliated technical field

The utility model relates to a kind of portable experimental teaching equipment, especially contain collection power lead, downloading wire, with the Single Chip Computer Teaching Experiment plate of the novel portable three lines unification of the USB line of PC communication Serial Port Line three lines unification.

Background technology

In China, single-chip microcomputer is familiar with by everybody, its appearance is the milestone event of computer technology in modern age, has formally formed general-purpose computing system and embedded computer system (abbreviation embedded system) two large branches because the birth of single-chip microcomputer indicates computing machine.The advantages such as single-chip microcomputer claims again single chip microcontroller, and it has, and volume is little, low in energy consumption, the control function strong, expansion is flexible and easy to use have been widely used in the applications such as instrument and meter, household electrical appliance and electronic toy.In order to make towards the society each application of teaching, cultivate more better poly-talented, applied talents for society, domestic a lot of colleges and universities have all offered single chip madine.As the basic required course of colleges and universities' science and engineering specialty, this course is again all very strong courses of a special kind of skill and practicality, and therefore, experimental teaching occupies critical role.

And tradition is high for the chamber maintenance cost of experimental teaching, and equipment is heavy, is mostly the platform of comprehensive a plurality of experimental projects, and inner structure is complicated, does not have complete design of experiment, student's indigestion experimental principle.For convenient teaching, experiment table has also adopted integrated encapsulation, when the student does experiment, only need call the experiment that designs, and correct line just can obtain net result.Like this, the student not only lacks property of participation, and is difficult to be taken exercise in the actual design ability of single-chip microcomputer.

Summary of the invention

The above-mentioned deficiency that is used for the chamber of experimental teaching in order to overcome tradition, the utility model provides a kind of three line Integral type CUGB51 singlechip experimental boards of novel portable, this brassboard is easy to carry, perfect in shape and function, the scope of application is extensive, can use as single chip madine experiments supporting instrument, and can be used as graduation project and instruct instrument, student's innovative experiment instructs instrument, the uses such as university student electron design game training apparatus.Make the student more deep to the single-chip microcomputer mastery of knowledge, circuit design and debugging technical ability all improve a lot, and cost of development is cheaper, is easy to safeguard.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of three line Integral type CUGB51 singlechip experimental boards of novel portable, comprise the collection power lead, downloading wire, USB line with the unification of PC communication Serial Port Line three lines, the P89V51RD2 single-chip microcomputer, 12864 lattice lcd LCD, 8 bit parallel DA converter DAC0832, the LED horse race lamp, 4 seven sections common anode charactrons, passive hummer, serial FLASH memory 24C08, serial digital temperature sensor DS18B20,24 double channel A/D converter CS5550 and 4 * 3 rank scanning keyboards, wherein the P89V51RD2 single-chip microcomputer is the core of whole brassboard, it connects 12864 lattice lcd LCD by the P0 mouth, 8 bit parallel DA converter DAC0832, LED horse race lamp and 4 seven sections common anode charactrons, by P1.3 mouth connected with passive hummer, be connected two IO mouths with P3.5 by P3.4 and connect serial FLASH memory 24C08, connect serial digital temperature sensor DS18B20 by the P3.7 mouth, connect 24 double channel A/D converter CS5550 and 4 * 3 rank scanning keyboards by the P2 mouth, the P89V51RD2 single-chip microcomputer also connects 4 seven sections common anode charactrons by the P1 mouth in addition.

Described 24 double channel A/D converter CS5550 have on the sheet AC/DC skew and gain calibration function, comprise one can with serial line interface and built-in temperature sensor that can be used for gain compensation of controller both-way communication.

The D/A conversion integrated chip that described 8 bit parallel DA converter DAC0832 are 8 resolution, fully compatible with microprocessor.This 8 bit parallel DA converter is made of 8 input latches, 8 DAC registers, 8 D/A change-over circuits and conversion control circuit.

But described serial digital temperature sensor DS18B20 is formed by networking digital temperature sensor chip package.

Can finish following infrastest according to module integrated on the brassboard: the experiment of light emitting diode horse race lamp, matrix keyboard identification experiment, charactron dynamically shows, the timer interrupt experiments, the external key interrupt experiments, hummer produces the melody experiment, 24 ∑-Δ high-accuracy data acquisition experiments, Arbitrary Waveform Generator experiment, power down is obliterated data storage experiment not, with PC RS232 communication experiment, the temperature sensor experiment is with the 12864LCD liquid crystal display demonstration experiment of character library.And the based single infrastest combination experiment expanding out, but the equal combination in any of above-mentioned infrastest, recycling expansion mouth carries out the module expansion, then can more test around single-chip microcomputer.

The beneficial effects of the utility model are, and are easy to carry, perfect in shape and function, and the scope of application is extensive.Since finishing first published research and development from June, 2007, repeatedly be used for the single chip madine teaching, Undergraduate Graduation Design instructs, student's innovative experiment instructs, undergraduate's practical teaching, the Pre-Games Training of University Students in Beijing electronic designing competition, the Pre-Games Training of national college students' electronic designing competition.51 multi-function single-chip computer teaching experiment boards can well help Students ' Learning and use single-chip microcomputer, knowwhy is converted to puts into practice technical ability, make the student more deep to the single-chip microcomputer mastery of knowledge, and circuit design and debugging technical ability all improve a lot.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is three line Integral type CUGB51 singlechip experimental board schematic diagrams of novel portable;

Fig. 2 is the entire block diagram of three line Integral type CUGB51 single-chip microcomputers of novel portable;

Fig. 3 is three line Integral type CUGB51 singlechip experimental board and PC connection layout of novel portable.

Embodiment

To be briefly described according to Fig. 1-3 pair of this novel portable teaching experimental equipment now.

Fig. 1-3 has illustrated a kind of three line Integral type CUGB51 singlechip experimental boards of novel portable, comprises collection power lead, downloading wire, the USB line with the unification of PC communication Serial Port Line three lines, P89V51RD2 single-chip microcomputer, 12864 lattice lcd LCD, 8 bit parallel DA converter DAC0832, LED horse race lamp, 4 seven sections common anode charactrons, passive hummer, serial FLASH memory 24C08, serial digital temperature sensor DS18B20,24 double channel A/D converter CS5550 and 4 * 3 rank scanning keyboards.

In Fig. 2,1 is the P89V51RD2 single-chip microcomputer, 2 is 12864 lattice lcd LCD, 3 is 8 bit parallel DA converter DAC0832,4 is the LED horse race lamp, 5 is 4 seven sections common anode charactrons, 6 is passive hummer, 7 is serial FLASH memory 24C08,8 is serial digital temperature sensor DS18B20,9 is 24 double channel A/D converter CS5550,10 is 4 * 3 rank scanning keyboards, wherein the P89V51RD2 single-chip microcomputer is the core of whole brassboard, and it connects 12864 lattice lcd LCD by the P0 mouth, 8 bit parallel DA converter DAC0832, LED horse race lamp and 4 seven sections common anode charactrons are by P1.3 mouth connected with passive hummer, be connected two IO mouths with P3.5 by P3.4 and connect serial FLASH memory 24C08, connect serial digital temperature sensor DS18B20 by the P3.7 mouth, connect 24 double channel A/D converter CS5550 and 4 * 3 rank scanning keyboards by the P2 mouth, the P89V51RD2 single-chip microcomputer also connects 4 seven sections common anode charactrons by the P1 mouth in addition.

In Fig. 3,1 is the power lead of conventional one-piece machine brassboard, and 2 is the downloading wire of conventional one-piece machine brassboard, and 3 is the Serial Port Line of conventional one-piece machine brassboard.The USB line of this CUGB51 singlechip experimental board realized the synthetic line of power lead, downloading wire and the Serial Port Line of conventional one-piece machine brassboard, the characteristic such as has and the scope of application is extensive with low cost, easy to carry.Three line Integral type CUGB51 singlechip experimental boards of novel portable only need the function that a supporting USB line just can be realized powering, program is downloaded, communicated by letter with PC, basically overcome the shortcoming of traditional experiment case, easy to carry, perfect in shape and function, the scope of application is extensive, and cost of development is cheaper, is easy to safeguard.

The above is preferred embodiment of the present utility model; should be pointed out that to those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvement and conversion, these improve and conversion all falls into protection domain of the present utility model.

Claims

1. the Single Chip Computer Teaching Experiment plate of novel portable three lines unification, its speciality is that this brassboard comprises the collection power lead, downloading wire, USB line with the unification of PC communication Serial Port Line three lines, the P89V51RD2 single-chip microcomputer, 12864 lattice lcd LCD, 8 bit parallel DA converter DAC0832, the LED horse race lamp, 4 seven sections common anode charactrons, passive hummer, serial FLASH memory 24C08, serial digital temperature sensor DS18B20,24 double channel A/D converter CS5550 and 4 * 3 rank scanning keyboards, wherein the P89V51RD2 single-chip microcomputer is the core of whole brassboard, it connects 12864 lattice lcd LCD by the P0 mouth, 8 bit parallel DA converter DAC0832, LED horse race lamp and 4 seven sections common anode charactrons, by P1.3 mouth connected with passive hummer, be connected two IO mouths with P3.5 by P3.4 and connect serial FLASH memory 24C08, connect serial digital temperature sensor DS18B20 by the P3.7 mouth, connect 24 double channel A/D converter CS5550 and 4 * 3 rank scanning keyboards by the P2 mouth, the P89V51RD2 single-chip microcomputer also connects 4 seven sections common anode charactrons by the P1 mouth in addition.

2. the Single Chip Computer Teaching Experiment plate of novel portable three lines as claimed in claim 1 unification, wherein said 24 double channel A/D converter CS5550 have on the sheet AC/DC skew and gain calibration function, comprise one can with serial line interface and built-in temperature sensor that can be used for gain compensation of controller both-way communication.

3. the Single Chip Computer Teaching Experiment plate of novel portable three lines as claimed in claim 1 unification, the D/A conversion integrated chip that wherein said 8 bit parallel DA converter DAC0832 are 8 resolution, fully compatible with microprocessor, this 8 bit parallel DA converter is made of 8 input latches, 8 DAC registers, 8 D/A change-over circuits and conversion control circuit.

4. the Single Chip Computer Teaching Experiment plate of novel portable three lines as claimed in claim 1 unification, but wherein said serial digital temperature sensor DS18B20 is formed by networking digital temperature sensor chip package.