For whether to buy Jinzheng DVD player, it is recommended that users consider it according to their own needs and budget. If you are looking for a player with full features, clear picture quality and a moderate price, then Jin Zheng DVD Player is a worthy considerationSelect. But if you have higher requirements for sound quality and design, or need to support more disc playback in a specific format, then you may want to consider other brands or models of players.
Jacko BDP-G4350 This player is extremely cost-effective, powerful disk reading ability, compatible ability is strong, can meet the needs of high-quality viewing. Read BD DVD CD VCD and other discs at high speed, and have automatic error correction, smooth disk reading characteristics, old discs, read without error. Dolby sound can also be heard, high, medium, bass, worth buying.
GIEC Jaco/p>
2, note that due to the single-phase conduction of the diode, the MCU receives a pulse signal, rather than a fixed level. When the phase is missing or the voltage of a certain phase is too low, the photoelectric isolator cannot be switched on and no pulse signal is output. In order to change the output into a fixed level signal, diode rectification and capacitor filtering can be added to the output side of the photoisolator. LX, LX- connected to both ends of the voltage to be measured (phase or line voltage).
3, should be possible. If you choose a double serial microcomputer is relatively simple. If it's a serial port. That is troublesome, you can simulate the serial port, but it takes up a lot of systemsUnified resources..
4, there is no need for you to toss. It is generally believed that if 100%PWM is 5V, 50% duty cycle is 5V, and 10% duty cycle is 0.5V. The PWM output is always 5V, but the duty cycle is different, and the follower and wave circuit need to be converted to DC. Once the filter circuit is added, it must be inaccurate. If you want to be accurate, the output end of the ADC detection, even if the feedback to the MCU, for adjustment.
5, today I am also idle nothing on the Internet, it is estimated that you will not be too clear for a while, give you a suggestion will not use Baidu, thatIt is very helpful, the problems you encounter, 99% of predecessors will encounter, and they will certainly be solved, otherwise the MCU will not be popular, you say it is. It can be hard asking people that all day long. Try to work things out on your own.
6. The picture you gave me is not clear, but I understand roughly what you mean. Dc brushless motor, usually three-phase, driven by a three-phase half-bridge composed of six MOS tubes, you can consider a half-bridge with a PWM wave to drive, but the premise is that the actual drive signal of the upper and lower bridge arm must be reversed, and the corresponding circuit in the drive circuit has an automatic dead zone, otherwise it will burn powerComponents.
PMP is a video format, wireless full sun He is suitable for PSP to play high-definition video, was originally developed in South Korea, originally used to play AVI high-definition format movies, but found that PSP in the pure AVI format is very unstable, So in the AVI format bread on a layer of coat, so that the video on the PSP more smooth playback, the formation of a new format -PMP. It's not the same format as MP4Code.
PSP New AVI, PMP file Media player can play AVI and the latest PMP file software, speed is perfect. Recommended download. After downloading and decompressing, there are two folders, "folder" and "folder %", put in the PSP/GAME folder. Then you can see it in the PSP's GAME, Memory Stick. Press O to run the production of PMP files into the PSP/ VIDEO.
1, need to master the knowledge and ability: -- master light wave, wireless, multimedia and other communication technology. Analysis, design, debugging of international communication system and communication network embedded [I am also a computer major, more understanding of this, the following is the dean of Tongji University software School said, a detailed introduction to embedded, you can let your boyfriend see] Embedded is currently one of the most popular and promising it application fields.
2, embedded is divided into two modules, one is the basic hardware. That is, according to the requirements of hardware technology to achieve the underlying circuit of the product, this part is generally completed by electronic students. The second is the software part (which is what you call embedded systems). In fact, embedded is a hardware circuit plus a real-time operating system.
3, I suggest you go to Wuxi, Jiangsu Province, China's largest Internet of Things research and development base, where a lot of high-tech technology was born. One direction you can find embedded there is the arrival of the Internet of Things era. PekingThese big cities are not suitable for some fresh graduates. Life is too stressful. It's better to go to second - and third-tier cities for a few years.
4, in this respect, you need to connect the commonly used circuit, such as high-gain amplifier circuit, follow the circuit, filter circuit design, learn protel drafting software, will draw the circuit schematic, will PCB board. During the preparation, we must learn to weld the circuit with a multipurpose plate, or corrode the circuit with ferric chloride, which has a very good effect.
They have successfully developed a rich and diverse product range, aiming to provide customers with quality products and services. Among them, the company's core products cover LCD TV, VCD/DVD, DVR, DVB and various ASICs and other home entertainment platform chip solutions, and this field is still expanding.
SUNPLUS is Taiwan Sunsun Technology. Sun Technology was founded in 79 years of the Republic of China, dedicated to home entertainment platform chip design and system integration solutions, products include digital audio and video player single chip, high quality digital box chip,High quality LCD TV control chips and digital TV chips help manufacturers to create digital home entertainment products with both quality and efficiency. Address Wireless charging Sun : Taiwan Hsinchu Science Park SQ is Yi Qiang Technology Co., LTD.
solution is a basic function chip or chipset provided by a chip manufacturer to various manufacturers, and manufacturers develop their own products according to the functions allowed by the chip.
Wireless charging sun If you kill time wireless chargingLing Yang I suggest that the Ling Yang plan be considered. I do this, wireless charging sun You can also consider buying action plan compared to the Sun's slightly stable, but the action plan is relatively new. It depends on you. We sell machines to customers are ready to ship. The function is told truthfully to the customer.