NEC used to be a 3LCD projector, only in recent years began to produce DLP projectors. Benq are all DLP projectors. Personally recommend BenQ, BenQ W1500 is still good.
In addition, Samsung's memory quality is better, which is welcomed by DIY users; While Taiwan Province Huabang (WINDBOND), South Asia (NANYA), ELITEMT and other memory chips are also more common in the domestic market, itThe way. Usually, the brand identity of the chip is printed on the surface of the chip or on the product packaging. By looking closely at these identifiers, Digital Fish can make an initial determination as to whether the chip is from NEC or VIA. Second, check the technical specifications.
2, has been nec's good, mainly reflected in the transmission speed and compatibility.
3, must be NEC's good. USB expansion cards like D-LINK and Texas Instruments use NEC chips.
4, if it is a computer problem. Your computer is not damaged by a virus. USB0's driver is noIs the installation intact or version incompatible. There is no software conflict (solve the software problem first) in general out of a prompt to install the driver. If it's a computer hardware problem.
5, the difference between NEC and VIA chips can be considered from the following aspects: Manufacturer brand: NEC and VIA are two different chip manufacturers, by looking at the brand logo on the chip or the trademark on the product packaging, you can determine the manufacturer of the chip. Technical specifications: There may be differences in technical specifications between NEC and VIA chips.
1, the brand, model and market division of USB 0 bridge control chip The USB 0 bridge control chip (USB 0-to-ATA/ATAPI bridge chip) used by the mobile hard disk box is mainly from Taiwan, followed by the United States and japan. The major USB0 bridge chip manufacturers in Taiwan form a triad: Century Minsheng (Myson), Genesys Logic (Genesys Logic), and Yang Chi Technology (ALi).
2, the most basic transistorThe role of this is to amplify the effect, it can turn the weak electrical signal into a certain strength signal, of course, this conversion still follows the conservation of energy, it is only the energy of the power supply into the energy of the signal. An important parameter of the triode is the current amplification factor β. When a small current is added to the base of the triode, a current β times the injected current can be obtained on the collector, that is, the collector current. 3. From 1983, when Samsung officially announced its entry into the memory industry, to the end of 1992, when Samsung surpassed NEC of Japan to become the world's largest DRAM memory manufacturer for the first time, Samsung has gone a long way10 tough years. Since then, Samsung has been ranked first in the world for nearly 30 years, and South Korea's economy has also taken off, realizing the transformation to a high-tech oriented economy. South Korea continues to make efforts in the field of memory chips, and has long maintained its position as the world's first memory chip producer. 4. NEC Corporation plans to use its experience in supporting Open RAN commercial deployments in Japan to help telecom service providers roll out Open RAN networks around the world. The vaccine from the University of Oxford and Astrazeneca will undergo new global trials after its effectiveness was questionedAccording to the news of DeepTech public number on November 29, the vaccine from the University of Oxford and Astrazeneca in the UK will undergo new trials after its effectiveness data was questioned.
1. Very good. nec720201 chip is a Japanese brand, good quality, good after-sales, can be guaranteed for 5 years, NEC's world's first USB0 main control chip, nec720201 chip uses NEC solution, the third generation control chip.
2, D72020D720202 are NEC third generation chips. The difference is the size of the chip package and the number of interfaces: the D720201 supports 4 USBs, and the D720202 supports 2 USBs.
3, in the field of automotive electronics, NecJapan's chips can be used in vehicle electronic products, such as car audio, navigation systems and safety controllers, the role is to improve the performance and function of automotive electronic equipment. NecJapan's chips play an important role in various fields.
4, FL1100 chip is good. FL11The 00 chip provides high transmission speed and stability, supports USB0 and USB1 standards, and has good compatibility. The transmission speed of the nec chip is very low, and it cannot support high-speed transmission of USB0 and above, and the compatibility of the system is also insufficient. Therefore, the reliability and compatibility of the FL1100 chip is better than that of the nec chip.
On the surface, I have similar answers to the above friends, F1 is the current fuse; D3 is a rectifier diode.But from your description of the circuit is not, how can the F1 fuse "always resistance is 5 thousand ohms, and the other is always 130 thousand ohms" D3 can be sure that the diode, you can see from the PCB board that one end is white, for the negative electrode. What you call "infinite resistance" could be a breakdown in the tube.
F in F1 generally refers to fuse protection filament; As shown in the figure, AMS1117 is a three-terminal voltage regulator chip, and 8 is an 8v voltage regulator output.
Obviously, to make the output W of the 4-way selector equal to the function F, only D0=0, D1=1, D2=C, D3=C. Accordingly, the logic circuit diagram of realizing the given function with a 4-way selector can be made, as shown in Figure 16. Similarly, you can also select A, C, or B, C as the selection control variable, which will make the data input different.
has previously been nec's good, mainly reflected in the transmission speed and compatibility.
VIA's chips are not used, they say NEC-chip cards are better. It is recommended to buy a good master chip is the expansion card of NEC D720101GJ. In addition, if the Southbridge supports USB0, it is not recommended to purchase another expansion card unless it is unstable or has insufficient ports.
NEC's research and development strength in this field is relatively strong, and the first USB0 chip is also NEC. It is recommended to buy a good master chip is the expansion card of NEC D720101GJ.
However, you can only use small power consumption devices such as u disk, if you use mobile hard disk you must add external power to your mobile hard diskOtherwise your machine won't have enough power. (I'm talking about when you plug in the converter card, the battery is not enough) There may be a problem with the hard drive cable, please check it.
Chip appearance: There may be slight differences in the appearance of NEC and VIA chips. The type of chip can be identified by observing features such as the logo, pin arrangement, and package form on the chip. It is important to note that for professionals or those with relevant experience, it may be relatively easy to distinguish between NEC and VIA chips. However, for the average user, distinguishing between chip types may require more expertise and technical support.
Secondly, consult the technical specifications. NEC and VIA chips may differ in technical specifications, including performance parameters, functional characteristics, and supported interfaces. Digital fish can obtain this information by consulting the official website, product manuals or relevant technical materials, and compare the technical specifications of different chips, so as to more accurately judge the type of chip. In addition, observing the appearance characteristics of the chip is also an effective method.