Why did you have to wear a shoe cover in computer class before?

With the improvement of the current economic level, today's personal computer has basically become a constant office tool for every family. But a few decades ago, computers were rare. In the early days, computers were called microcomputers. Generally speaking, there is no such equipment at home. At that time, many schools organized computer courses, such as learning some input methods or computer games. At that time, everyone was interested in computers.

I wonder if you have the habit of taking computer classes. You must put on your shoes before entering the computer room. At this time, a classmate asked the teacher why he had to wear a shoe cover. At that time, the teacher would say that there were bacteria on the soles of shoes, which would infect the computer with viruses. But now, everyone should know that this is a joke. Then, why did you need to wear a shoe cover in computer class at that time, and then you don't need to wear this kind of thing?

First of all, the first reason is that dust has a certain probability of damaging computer motherboards and other equipment. If you wear shoe covers, you can reduce the dust in the computer room. In addition, the anti-static floor was laid in the computer room. If there is sand on your feet, the floor can step out of the pit. From another point of view, static electricity and dust have little influence on computer-related hardware. For example, many computer rooms are not equipped with anti-static floors. You don't need to wear any shoe covers when you go in.

So now, at that time, protection is a bit excessive. After all, computers were still relatively expensive at that time. If it fails, it will be a lot of money. But now with the improvement of the overall economic level, the price of computers has also dropped sharply, and schools have paid less attention to computers. Therefore, the disappearance of shoe covers is also the improvement of economic and technical level.