1 "serial port and parallel port knowledge, (copy others, don't be too wordy, focus on it).
Both serial port and parallel port are standard bus interfaces on computers.
For example, serial port is like using a lamp, which keeps on and off, sending you signals and telling you information. The parallel port image uses a set of lights, and the combination of lights on and off is used to signal.
The theoretical speed of parallel port is faster than that of serial port, and it is mostly used for devices with slow connection speed, such as mice and card readers.
Parallel ports are mostly used to connect peripherals with large data such as printers.
At present, these two ports have entered the elimination period and will be replaced by UBS ports.
Where is the 2 "1394 interface mainly used, such as the speed, compared with USB.
1394 is mostly used for video transmission and acquisition. For example, our home video recorder (DV) often uses the 1394 interface to connect with the computer to transmit video signals.
In addition, 1394 can also be used for networking between machines (it needs special software support and is rarely used).
1394 is faster than USB! A slow friend is wrong. 1394 is similar to USB 1.0, and its speed is much higher than that of USB 1.0, but the cost of USB is relatively low, and it can connect multiple devices in series, while 1394 is not, so the popularization speed of USB is faster and more universal than that of 1394, and both of them are supported.
After USB2.0 came out, the theoretical maximum speed reached 480M/ s, but it was still far from the theoretical maximum speed of 1G/ s, only higher than the minimum speed of 1394 of 400 m/s. In actual use, USB2.0 is much smaller than 1394.
What is the hard disk anti-tilt protection of IBM notebook? Explain professionally. Is it only available to IBM? Which other brand has it?
The hard disk protection of IBM notebooks with more than one person is a bird's beak, and there are many hard disk protection technologies. For example, many hard disks now have new anti-seismic technology, and hard disks that cannot resist earthquakes at all are almost extinct.
Such as: Maituo ShockBlock seismic technology, Hitachi magnetic head loading and unloading and eddy current magnetic arm lock, etc. Almost every brand of hard disk has its own unique anti-seismic technology.
But I can tell you that at present, no machine can say that it will not damage the hard disk if it falls from a height of three meters!
The shock-proof ability of the current hard disk itself is enough for general use, and there will be no problem.
Are most of the molds and motherboards of notebooks made in Taiwan Province Province? Is Foxconn the largest OEM? Does it make 70% replacement parts?
It may be the largest, but no one can say for sure, because no one has done accurate statistics yet. Moreover, Foxconn does not OEM all parts of a certain type of machine, it only OEM some parts, so it is difficult to count. If the parts are from which factory, the biggest OEM is Intel, haha. As for 70% of the data, I don't know where it comes from, whether it refers to the number of its accessories or the total number of accessories. There is no doubt that Foxconn is a big OEM.
5 "What is piano paint? Is this technology really available, or is it a scam?
Baking paint: Primer and topcoat are coated on the substrate three times, and each time they are sent to a dust-free constant temperature curing barn for baking. Relatively speaking, the other is painting. Adding the word "piano" means that it looks as good as a piano, and there is no exact "piano painting" process. To put it simply, compared with painting, baking paint has higher cost, good appearance and is not easy to fall off. However, because the paint surface is too bright, it is easy to show the user's fingerprints and dirt, so some people laugh and call it "fingerprint machine".
6 "Is the current dual-core processor a true dual-core or a virtual dual-core technology? Which are true dual cores and which are virtual?
It is really dual-core, not virtual technology. A few years ago, Intel's Hyper-Threading P4 was considered as a dual-core technology, but Intel never said it was a dual-core.
At present, both Intel and AMD have dual-core CPU, and the price of dual-core CPU has entered the civilian level, which is not very expensive.
7 "Is the fingerprint reader capable of identifying? Can you find two people with the same fingerprints among 10000 people?
Fingerprint identification technology is very mature now. There may not be two people whose fingerprints are exactly the same (ten fingers are exactly the same) in the world, but similarities identified by fingerprint readers may still exist, because the fingerprint data scanned by fingerprint readers has been somewhat reduced. It is hard to say whether two people out of 65,438+100000 people will be identified as the same, and no one has done such tests and proofs. The specific situation of fingerprint readers with different accuracy is different, but what is certain is that
8 "After Lenovo acquired IBM, is IBM's notebook original? Is the quality of T6 1 different from that of T60?
Lenovo has completely acquired IBM's global PC business and taken over the original factory, that is to say, the workers are still those workers, the factory is still those factories, and the top management has changed.
9 "Acer's notebooks are indeed worse than other brands in terms of heat dissipation. Why do many people say that?
All the online curses are notebooks, hehe. How about Acer? I don't know. I have a DELL M 12 10 notebook, which works well, but there are still many people cursing online, haha. I think all the people who come up to scold are friends with problems, and they don't have time to come out to scold those who use them well, so we should also use our brains to analyze online comments. I think Acer's machines should have some design problems, but there should also be some good designs.
10 "Is it true that IBM's keyboard is waterproof and can be poured in a glass?"
A small amount of water can be discharged. If you accidentally pour a lot of water, it may flow into the motherboard from other places than the keyboard, so it is best not to let the liquid flow into the notebook. In other words, pouring water slowly from the front of the keyboard is not a problem, but if water flows into the notebook from the side (such as radiator), it will also ruin your IBM.
1 1 Are most of the screens of all notebooks made by Samsung? If not, who is the OEM?
If so, Samsung will be more than five times bigger than it is now. Each company has its own OEM for each model. South Korea and Taiwan Province do more OEM work.
12 does Lenovo produce its own equipment? Why did he come out of the computer?
At least it was originally produced, and QDI (Cordia) motherboard company is a subsidiary of Lenovo, but I don't know what the relationship is now.
13 "IBM IBM's notebook T series shell is titanium alloy? Is the shell of Al-Mg alloy coated with plastic?
T series is a titanium alloy, and the aluminum-magnesium alloy shell is a real aluminum-magnesium alloy shell, not an aluminum-magnesium alloy shell.
I'll add what I didn't ask when I think of it. Please arrange the answers according to the serial number when you answer the questions.
PS: There is no such thing as dual-core technology. Since the dual-core came out, it is all physical dual-core. Because Intel's PD series memory controller is not in the CPU, it has been said that it is not dual-core in the true sense, but physically, it is still dual-core. Only hyper-threading can be regarded as a "dual-core" in technology.