【Daily Question No. 132】March 11, 2016: +2 wealth for participation, +3 wealth for a correct answer
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This post was last edited by hamiltontai on 2016-3-15 at 08:50. To boost activity on the desktop version, a daily question challenge is now in effect: participants earn +2 wealth points, and those who answer correctly receive an additional +3 wealth points. This initiative aims to enliven the atmosphere of this forum, promote basic computer knowledge, and offer rewards in the form of wealth points to its users. A small flower is awarded for the first correct answer~~ True or False: USB devices can be plugged in and removed while powered on, truly achieving plug-and-play functionality. ( ) Answer: Correct. Reply with the answer you think is correct to participate in the quiz; you will receive +2 wealth points (points are added automatically according to the rules). If your answer is incorrect, no additional points or feedback will be given. If you answer all questions correctly, you will get an extra +3 wealth points. Additional rewards in the form of more wealth points will also be given if you provide detailed explanations or analyses for the questions and answers. The answer will be visible after the reply. Note: We will close this post after 24 hours. For past posts on the Daily Question, please refer to the compilation post: http://bbs.hcbbs.com/thread-1432650-1-1.html What topic would you like for the Daily Question? Basic knowledge of computer hardware and software? Excel operations? Camera parameters? Or, in addition to answering the questions, feel free to share your suggestions for the daily question
Correct,√~~~~~~~~~~~~~
First, it is necessary to understand the principle of USB. If you take a close look at the USB port, you will find that its working principle is actually quite simple. As is well known, a USB cable consists of four data lines, two of which carry data while the other two provide power. The connection gold fingers of these four wires are all inside the port. When looking inside, you will see that the two on the outer side are longer; those are the data cables ； The two shorter ones inside are the power cables; this is how USB works. When you plug a USB device into the machine, the signal cable makes contact first, followed by the power cable. When pulling it out, the opposite happens: since the power cable is shorter, it is cut off first, followed by the data cable. This operation has no impact on the entire system or the USB device, allowing for hot plugging. Once you understand this principle, ordinary peripherals such as floppy drives, optical drives, and even hard drives can be used with hot-swapping. When installing them, remember to connect the data cable first and the power cable later; when removing them, do the opposite. As long as you follow the correct steps, you can use hot-swapping with confidence. However, when performing hot-swapping of hard drives, it is important to use hard drives of the same model, as the model information of the hard drive is stored in the motherboard’s BIOS and this cannot be changed. This is not an issue with floppy drives or optical drives; you can use hot-swapping with them without any problems“
USB interface devices can be plugged in and removed while powered on, truly achieving plug-and-play functionality. (V)