Zhou Xing stood in front of the comprehensive experimental bench, busy with concentration. Sometimes he wrote code, sometimes debugged instruments, sometimes modified data... He had something in mind and was methodical.
The four of them stood behind Zhou Xing, stopped talking, and watched him quietly doing experiments.
After more than ten minutes, Zhou Xing pressed the power button confidently. Once the power was turned on, the circuit board on the test bench was running normally and the indicator light flashed steadily. The hardware design and software programming were perfectly combined. This experiment was successful.
Zhou Xing picked up a pen and notepad, faced the display screen, and began to record experimental data and check the result data.
After recording the data, Zhou Xing shouted happily: "Uncle Liu, the experiment is successful, we can proceed to the next item."
Zhou Xing turned to look for Liu Qiang, and then he realized that at some point, his father and two strangers were standing behind him, looking at him with admiration.
"Little Question, now you can 'test' them." As if there were two more people to dump the burden on, Liu Qiang smiled brightly and happily introduced to Zhou Xing:
Zhou Xing's eyes lit up, he looked at the two professors, introduced himself enthusiastically, and said: "Professor Chen, Professor Wang, hello! My name is Zhou Xing!"
Chen Jianbin glanced at Liu Qiang, looked at Zhou Xing and asked calmly: "Well, the experiment was done well, but what kind of knowledge have you learned? The content I teach is not generally difficult. Have you read any books on optical engineering?"
"Well, Professor Chen, photoelectric detection, image sensor information and communication, photonics, optical integration, optoelectronic devices... I have read a lot of books on optoelectronic engineering." Zhou Xing nodded seriously:
"That's right! Then let me ask you a question to test your learning foundation." Chen Jianbin nodded and said with a smile:
"Okay, Professor Chen, you can ask!" Zhou Xing said without fear:
"A thin magnifying glass with a focal length and clear aperture of 40mm, the pupil of the observer's eye is 3mm, the eye is located 20mm behind the magnifying glass, and the object is located 35mm in front of the mirror. The positions of the aperture diaphragm, entrance pupil and exit pupil of this system and What size do you want?" Chen Jianbin chuckled and asked awkwardly:
"This question is to test the knowledge of aperture technology. The result can be obtained through three steps. 1. Each optical aperture is imaged into the object space. 2. Direct light from five points to the edge of the aperture image to find the intersection between the light and the optical axis. Angle, 3, the diaphragm corresponding to the smallest angle is the aperture diaphragm. Then according to the definition of the entrance pupil and the exit pupil, it is easy to find the result! Professor Chen, the result is..." Zhou Xing said calmly in front of Chen Jianbin's eyes:
"Don't forget the result, you are very good!" Seeing Zhou Xing explain the problem-solving ideas in such detail, Chen Jianbin immediately looked at him differently and interrupted:
"Thank you for the compliment, professor. Can I ask you a question?" Zhou Xing asked eagerly:
"Don't worry, Professor Chen has finished the test, and I want to test you too! Have you read the communication engineering book?" Wang Quan suddenly interrupted and asked Zhou Xing:
"Well, I have learned it. Professor Wang, feel free to ask." Zhou Xing looked at Wang Quan, nodded and said:
"What are the secure communication protocols of WLAN systems, and what are their advantages and disadvantages?" Wang Quan nodded and asked tentatively:
"WEP has obvious security flaws. WPA uses the TKIP protocol for encryption. This protocol provides a key reset mechanism and strengthens the effective length of the key. Through these aspects, it makes up for the shortcomings of the WEP protocol. WAPI uses bow key cryptography technology..." Zhou Xing Without thinking, he answered directly:
"Well, the answer is very standard, but just being able to endorse is not enough! I'm asking you a question!" Wang Quan
"Okay, just ask!" Why are you so annoying! Zhou Xing said slightly helplessly:
"In an 8-channel communication network, the traffic volume of each user M is 0.01Erl, and the service level B=0.1. If a dedicated call channel is used, how many users can the communication network accommodate?" Wang Quan deliberately embarrassed Zhou Xing, I chose a more difficult calculation question:
"B=0.1N=7... The number of users this system can accommodate: mn462." Zhou Xing listed the formulas and said the calculation results on the spot without any difficulty.
Chen Jianbin and Wang Quan looked at each other, and they saw a hint of shock in each other's eyes.
Damn it! At such a young age, Zhou Xing was the top scorer in the college entrance examination. Did he start studying while still in his mother's womb
Just now I watched Zhou Xing independently complete the experiment of microcontroller development, so he should have a very solid knowledge base in this area. However, the question they asked him was that he must have a very solid knowledge base in the fields of optoelectronic engineering and communication engineering. It's possible that you can answer it.
"Professor Chen, Professor Wang, how are you doing? Are you okay?" Zhou Wenhai looked at Chen Jianbin and Wang Quan and asked with joy:
"It's a bit weird, but I can't find any reason to object!" Wang Quan smiled bitterly:
"Yes! Yes, very yes, maybe this is genius!" Chen Jianbin looked at Zhou Xing enviously and sighed:
"Thank you, Professor Chen, for your compliments. Can I ask you a few questions?" Is it okay to ask questions? Zhou Xing thanked Chen Jianbin and said eagerly:
Since you have to collect money from others, you still have to do some work. You can earn 100,000 yuan in two months and only need to teach one student. This job should not be too simple. Chen Jianbin said nonchalantly: "If you have any questions, just ask Just ask!"
"Professor, it's a question of measuring instruments. To measure a diffraction angle, the width is..." Zhou Xing asked unceremoniously:
"Well, is this a question? Did you measure it from the angle between the diffraction photopolar lines? If so, then..." Chen Jianbin pondered for a moment and answered Zhou Xing's question:
"I see, Professor, I have another question, measuring the radius and divergence angle of the laser beam..."
"The measurement of this problem requires the width of the slit..."
"Yeah, I understand, I have another question."
“…”
Soon, among everyone's somewhat dull eyes, Zhou Xing and Professor Chen fell into a rhythm of asking and answering questions. Zhou Xing showed signs of enlightenment from time to time, eagerly absorbing the knowledge that Professor Chen gave him.
Ten minutes passed in the blink of an eye. Professor Chen Jianbin, who was answering Zhou Xing's difficult questions, was sweating slightly on his forehead. However, Zhou Xing's questions seemed to be endless, one after another.
How much content has this guy learned, and how come he has accumulated so many questions
Seeing Chen Jianbin struggling to cope, Wang Quan's face couldn't help but change, as if he had a premonition of his own end.
I thought that one hundred thousand yuan could be easily pocketed, but I didn't know that this was the case. Wang Quan looked at Zhou Wenhai and said resentfully, "Mr. Zhou! It's hard for you to earn this money!"
To be able to make Wang Quan say this, the money was well spent!
Zhou Wenhai laughed and was so happy that his heartache about the high "tutoring fees" disappeared.