Time flies to the age of us using tube technology to make a computer, that is the computer's host to reach several tons, and often occupy the era of the entire room. In a certain in a laboratory, this hormonic suddenly stopped working, and our IT seniors immediately started to find this reason. With the guidance of design drawings, they quickly set the part that may have problems. In the next check, they found that this failure was originally caused by a bug in two relays. After fixing the computer and restarted, the engineer responsible for computer maintenance took this fault in a memo, so that other people can find a similar situation quickly to find the answer. Of course, he also wrote a designer to the computer, I hope to add a thinner metal net in the heat-dissipating hole in the host, ie, it does not affect heat dissipation, but it can prevent the bugs from climbed into the host.
Discover the difference above? A bug climbed into the host caused this incident, more we called bugs, which has been used in computer software failures from computer hardware failures. So what is the defect? Still look at this example above. The true defect is the problem proposed by computer maintenance engineers: I can install a thinner metal network in the heat dissipation hole of the host, that is, it does not affect heat dissipation, but also prevents the bugs from climbed to the host. This is where the computer designer negligence is the real defect of product. The fault caused by bugs is only one of the faults of this defect. That is, bugs are a manifestation of defects, and one defect can cause multiple bugs.
