51 SCM simulator and 51 SCM development board have what differentiation
http://www.siliconray.com/catalogsearch/result/?q=51
Hello, microcontroller simulator is said has become the product has been in development with. As the system application. And single-chip microcomputer development board is has not become a application of basic components products just need development program. This is the main difference. I hope it can help you.
51 simulator for single-chip microcomputer lovers is learning single-chip microcomputer and learn to use KEIL C51 developed software. 51 simulation implement use a SST89C58 microcontroller to realize simulation function, fired through a serial port and PC connection. The user can development is less than or equal to 28 K program. 51 simulator user application board directly into the position of the MCU. 51 simulator main performance: directly support KEIL C51 IDE development simulation environment. Can a single step, breakpoint, run at full speed of debugging; Can reference variables, RAM variables. Support assembly, C language mixed debugging. 28 K pieces (space program can at any time for the online program updates. Completely simulation P0, P2 mouth. The simulation frequency 6-33 MHz crystals optional, system configuration 11.0592 MHz. Can the standard 89 C51 simulation, 89 C52, 89 C58 to wait all the kernel's 51 single-chip microcomputer. 51 simulators occupy
2012年1月29日星期日
51 single-chip microcomputer and development board is what relation? How to use?
51 single-chip microcomputer and development board is what relation? How to use?
8051 51 SCM is a eight micro controller chip, it is the core component of 51 development board, SCM development board is commonly used the periphery of the single chip microcomputer integrated into the device on a circuit board, and SCM together make up a development system, can be in development board by writing to a program to control the device implements around corresponding function, to study the purpose of the single chip microcomputer. Specific usage of different development board be different, but they are usually need to be connected to a computer to have some serial port driver (serial used to download a program to SCM). Cross-examine me interested in this, but I get on one, what more do not understand, and the related books about ah of what simply do not understand!!!!! I should where to start?
Answer because you just ?
8051 51 SCM is a eight micro controller chip, it is the core component of 51 development board, SCM development board is commonly used the periphery of the single chip microcomputer integrated into the device on a circuit board, and SCM together make up a development system, can be in development board by writing to a program to control the device implements around corresponding function, to study the purpose of the single chip microcomputer. Specific usage of different development board be different, but they are usually need to be connected to a computer to have some serial port driver (serial used to download a program to SCM). Cross-examine me interested in this, but I get on one, what more do not understand, and the related books about ah of what simply do not understand!!!!! I should where to start?
Answer because you just ?
Want to learn 51 SCM please recommend a single-chip microcomputer development board
Want to learn 51 SCM please recommend a single-chip microcomputer development board
Want to learn 51 SCM, don't know what to buy good development board, taobao many, various types of all have, and takes the color, don't know which to buy. Buy any of the recommended a development board, had better be practical, incidental tutorial easily to learn, can do more than the best. In addition to recommend the practical intro book better, thank you. Problems added:
http://www.siliconray.com/thumb-usb-stc-8051-mcu-programmer-1.html
Color is not useful? As is common LCD practical.
General flowing water lamp, digital tube, matrix keyboard, independent keyboard, liquid crystal, a buzzer, the I2C is about the same, all get through to the single chip is about introduction, the practicality of the color is not big, general test plate on the 8 * 8 dot matrix also can show simple letters Numbers...
As for the book, GuoTianXiang recommend the new concept 51 SCM C language tutorial, introduction, improve, the development, the development QuanGongLve"
Hope that the above information will help you
Want to learn 51 SCM, don't know what to buy good development board, taobao many, various types of all have, and takes the color, don't know which to buy. Buy any of the recommended a development board, had better be practical, incidental tutorial easily to learn, can do more than the best. In addition to recommend the practical intro book better, thank you. Problems added:
http://www.siliconray.com/thumb-usb-stc-8051-mcu-programmer-1.html
Color is not useful? As is common LCD practical.
General flowing water lamp, digital tube, matrix keyboard, independent keyboard, liquid crystal, a buzzer, the I2C is about the same, all get through to the single chip is about introduction, the practicality of the color is not big, general test plate on the 8 * 8 dot matrix also can show simple letters Numbers...
As for the book, GuoTianXiang recommend the new concept 51 SCM C language tutorial, introduction, improve, the development, the development QuanGongLve"
Hope that the above information will help you
2012年1月15日星期日
Two transistor constitute a constant current source can drive power
Two transistor constitute a constant current source can drive power
http://www.siliconray.com/instrument.html
In lighting lamps and lanterns and the battery charger is inseparable from the constant current source circuit. The appended drawings is with two PNP transistor and four resistors constant current source circuit, through choosing high power transistor and heat sink can make constant current reached more than 1 A.
The transistor Tr1 and resistance R1, R4, R2 composition main circuit. R2 and R4 series of the transistor Tr1 base after the bias resistors. When the power is connected later, because of current flow in the base, there will be in Tr1 collector current flowing emitter current flows through R1 in R1 ends after will produce voltage drop. When R1 on both ends of the voltage drop to 0.6 V, Tr2 will then conductivity, Tr2 collector current flows through the R2. On the base of current form Tr1 shunt. Tr1's base will also reduce the current, collector current also will decrease. So after Tr2 conduction
http://www.siliconray.com/instrument.html
In lighting lamps and lanterns and the battery charger is inseparable from the constant current source circuit. The appended drawings is with two PNP transistor and four resistors constant current source circuit, through choosing high power transistor and heat sink can make constant current reached more than 1 A.
The transistor Tr1 and resistance R1, R4, R2 composition main circuit. R2 and R4 series of the transistor Tr1 base after the bias resistors. When the power is connected later, because of current flow in the base, there will be in Tr1 collector current flowing emitter current flows through R1 in R1 ends after will produce voltage drop. When R1 on both ends of the voltage drop to 0.6 V, Tr2 will then conductivity, Tr2 collector current flows through the R2. On the base of current form Tr1 shunt. Tr1's base will also reduce the current, collector current also will decrease. So after Tr2 conduction
Beginners required: a practical method of the electronic technology
Beginners required: a practical method of the electronic technology
Concave mirror finishing electronic editor:
http://www.siliconray.com/development-tools.html
A, the theoretical study can be "natural"
Attention conclusion. The theoretical analysis process often esoteric to understand, but the conclusion is clear, pay attention to the conclusion, can avoid the image, the straight take the essence.
Analysis diagram. The block diagram of the electronic equipment out clear structure and the signal to. If can skilled analysis diagram, can be in dealing with problems do fairly well, rapid judge fault lies.
Pay attention to outside characteristics. The performance characteristics of the components or circuit functions, parameters, tube feet take method, etc. Master the characteristics, can not understand the characteristics in, by the use of these components or circuit.
Learn to estimate. Estimation can help their learning ?
Concave mirror finishing electronic editor:
http://www.siliconray.com/development-tools.html
A, the theoretical study can be "natural"
Attention conclusion. The theoretical analysis process often esoteric to understand, but the conclusion is clear, pay attention to the conclusion, can avoid the image, the straight take the essence.
Analysis diagram. The block diagram of the electronic equipment out clear structure and the signal to. If can skilled analysis diagram, can be in dealing with problems do fairly well, rapid judge fault lies.
Pay attention to outside characteristics. The performance characteristics of the components or circuit functions, parameters, tube feet take method, etc. Master the characteristics, can not understand the characteristics in, by the use of these components or circuit.
Learn to estimate. Estimation can help their learning ?
2012年1月13日星期五
Stc51 burn to write programs for help
Stc51 burn to write programs for help
http://www.siliconray.com/
I welding the boards, how burned write and burned writing not go in, doubt reset circuit has a problem, using a multimeter to reset the lead feet, a 2.878 v, I didn't kill the power directly the reset line drawn, the results were so will burn write in, then, I didn't add reset circuit, to burn to write programs, also can burn in, reset for 0 voltage, but a plus reset circuit and burn don't go in, is this why?
Really and reset circuit have nothing to do.
Is not cold start-STC is this single chip features.
Suggest to use its website to write software to cook, you will be prompted to power then click "download", again to electricity.
Its website recommended circuit as the chart data:
http://www.siliconray.com/
I welding the boards, how burned write and burned writing not go in, doubt reset circuit has a problem, using a multimeter to reset the lead feet, a 2.878 v, I didn't kill the power directly the reset line drawn, the results were so will burn write in, then, I didn't add reset circuit, to burn to write programs, also can burn in, reset for 0 voltage, but a plus reset circuit and burn don't go in, is this why?
Really and reset circuit have nothing to do.
Is not cold start-STC is this single chip features.
Suggest to use its website to write software to cook, you will be prompted to power then click "download", again to electricity.
Its website recommended circuit as the chart data:
Stc51 microcontroller how burned to write programs
Stc51 microcontroller how burned to write programs
http://www.siliconray.com/12au7-6v6-10wx2-push-pull-hifi-tube-amplifier.html
STC single-chip microcomputer and AT the biggest difference between the single-chip series is that the program and write. STC MCU is through a serial port to burn to write programs. The specific steps can consult process:
1, download and install the software STC-ISP;
2, in the STC-ISP software according to the prompt of the face software step1, step2 and so on step by step for choice chip, the choice procedure hex files, choose a serial port and baud rate, times speed selection;
3, click on the download download program;
4, give STC the single electricity.
Note: 3 and 4 order will not be exchanged. STC microcontroller must cold start, not the first after power to download program. In addition, you need to make ISP circuit, microcontroller can't directly connected with pins will be a serial port, should choose MAX232, MAX3232 etc chips for level conversion
http://www.siliconray.com/12au7-6v6-10wx2-push-pull-hifi-tube-amplifier.html
STC single-chip microcomputer and AT the biggest difference between the single-chip series is that the program and write. STC MCU is through a serial port to burn to write programs. The specific steps can consult process:
1, download and install the software STC-ISP;
2, in the STC-ISP software according to the prompt of the face software step1, step2 and so on step by step for choice chip, the choice procedure hex files, choose a serial port and baud rate, times speed selection;
3, click on the download download program;
4, give STC the single electricity.
Note: 3 and 4 order will not be exchanged. STC microcontroller must cold start, not the first after power to download program. In addition, you need to make ISP circuit, microcontroller can't directly connected with pins will be a serial port, should choose MAX232, MAX3232 etc chips for level conversion
2012年1月9日星期一
Serial communication baud rate automatic identification
Serial communication baud rate automatic identification technology classification: network and the
http://www.siliconray.com/usb-converter-part-pins-uart-module.html
corresponding author: QiaoQu ZhaoGuoHao WangWenJi released in time: the 2008-01-24 for asynchronous serial communication, only in the communication is the same in baud rate, to realize the correct data transmitting and receiving; And some system always want to realize to the various baud rate of compatible. Usually the approach is, ask the other side first issued the regulations characters or data, the system of the character or received after data, calculation each other's baud rate. To adapt to each other's baud rate, such as some wireless transceiver module, GSM communication module, etc. Yet for testing, testing and other fields, and is not required to send system being tested has been a fixed characters or data, then for this kind of communication system and how to realize the wave ?
http://www.siliconray.com/usb-converter-part-pins-uart-module.html
corresponding author: QiaoQu ZhaoGuoHao WangWenJi released in time: the 2008-01-24 for asynchronous serial communication, only in the communication is the same in baud rate, to realize the correct data transmitting and receiving; And some system always want to realize to the various baud rate of compatible. Usually the approach is, ask the other side first issued the regulations characters or data, the system of the character or received after data, calculation each other's baud rate. To adapt to each other's baud rate, such as some wireless transceiver module, GSM communication module, etc. Yet for testing, testing and other fields, and is not required to send system being tested has been a fixed characters or data, then for this kind of communication system and how to realize the wave ?
Based on 51 SCM multimachine parallel communication system
Two-way communication mouth can also transmit is receiving data and transmit data, data flow is a two-way street, Ul_L and U2_H is receiving data also transmit data. This way the software programming is more complex, especially two-way transmit data using inquires when way. The inquires between the
http://www.siliconray.com/microcontroller signal more sophisticated. Now is two-way inquires the way as an example, the transfer of data between two single chip microcomputer flow chart as shown in figure 4 shows, U2_H process and U1_L. Among them U1_L U2_H transmit data to the signal and the transfer of one-way query definition, the U2_H P2.3 as U1_L new data transfer to the inquires the signal (the U1_L P2.4), P2.3 = "0" said new data are, P2.3 = "l" said no new data; The Ul_L P2.3 as receiving U2_H data query signal (the U2_H P2.4), P2.3 = "O ?
2.3 the application note
Two single chip microcomputer handshake between if the interrupt, because U2_H to send data U1_L receive external than external data quickly, Ul_L U2_H to transmit data, it is unnecessary to consider U2_H state, and U2_H U1_L to transmit data, due to U2_H receive external data U1_L than to the outside sending data quickly, U2_H must Ul_L inquires the state, that is, if U1_L in receiving U2_H data state, otherwise, U2_H won't be able to Ul_L transmit data.
If as RS_485 communication interface use, just click on the figure 2 a change in the circuit and increase the 75176 chip control of reading and writing, and two single chip with the main communication equipment connected microcontroller as the host, through the P2 mouth the a to coordinate two MCU is receiving data or transmit data.
Note the ?
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