You must believe it! The five biggest rumors in the history of mobile phones
The two major camps of Apple and Android have fought for more than 10 years and many excellent mobile phone brands have been born. Technology changes life, changing the "posture" of people using mobile phones. The progress of science and technology is huge, but some users haven't kept up with it. The old ideas left behind by some early functional machines are still very much in vogue. For example, a new mobile phone needs to be full of 12 hours of electricity, and the mobile phone needs to run out of power before it can be recharged.
The wise does not buy rumours
Some concepts are no longer applicable, and some of the rumors elicited by individual cases are also full of networks. There are many smart phones and there are more rumors. "The rumors stop at the wise men and the chat stops at the huh," and today I look at the top five mobile phone rumors of the most "devil".
Rumor 1: Use toothpaste to repair small scratches on the screen?
This topic seems to be somewhat reasonable. Isn't the toothpaste decontaminating? Can it remove tartar and restore teeth? Naturally it can also remove small scratches on the screen. But if you think about how the principles of cleaning toothpaste and the principle of screen repair do not seem the same, can it really be?
Toothpaste repair test preparation
The author took out the toothpaste, toothbrushes and other people's mobile phones. The author's iPhone X is too expensive, or does not feel bad about others. Next, look for the tiny scratches on your phone. Apply toothpaste to the scratched area and apply it with a toothbrush (not mine anyway), then clean the screen. Observe the effect.
Toothpaste repair screen process
As can be seen from the above video, the effect is very significant, and there are a few more scratches on the screen. In fact, the principle is very simple, toothpaste contains fine particles, remove the tartar on the tooth surface by friction. The scratch on the mobile phone screen is due to friction. Although toothpaste may fill the scratches, it will make the screen less transparent, which is not conducive to healthy vision. And with the tartar repair screen with the same friction properties, you can only make up the flowers.
Correct answer: Toothpaste cannot repair damaged screens, but it may worsen damage.
Small computer system interface (SCSI) is an independent processor standard for system level interfaces between computers and intelligent devices (hard disks, floppy drives, optical drives, printers, scanners, etc.). SCSI is an intelligent universal interface standard.
SCSI-3
In 1995, the more high-speed SCSI-3, called ultrasci, was born, and the data transmission rate reached 20MB / s. It increases the synchronous transmission clock frequency to 20MB / s and improves the data transmission rate. If 16 bit wide mode is used, the data transmission rate can be increased to 40MB / s. This version of SCSI uses a 68 pin interface, which is mainly used on hard disks. The typical characteristic of SCSI-3 is that the bus frequency is greatly increased and the signal interference is reduced to enhance its stability.
There are many models of SCSI-3. Ultra (FAST-20) has a transmission frequency of 20MHz, a data bandwidth of 8 bits and a transmission rate of 20MBps
Ultra wide has a transmission frequency of 20MHz, a data bandwidth of 16 bits and a transmission rate of 40mbps
The transmission frequency of ultra 2 is 80 MHz, the data bandwidth is 16 bits, and the transmission rate is 80 Mbps
The transmission frequency of ultra 160 is 80 MHz, the data bandwidth is 16 bits, and the transmission rate is 160 Mbps
The transmission frequency of ultra 320 is 80MHz, the data bandwidth is 16 bits, and the transmission rate is 320mbps
The transmission frequency of ultra 640 is 160MHz, the data bandwidth is 16 bits, and the transmission rate is 640mbps
Plastic SCSI Cover
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