In the Shaw Building, Xiao Xuan was thinking about the breadboard in front of the desk.

The classmates who were in the same group as him were shocked when they saw Xueba stunned like this, isn't it, is it difficult for the project to reach this point, and even Xueba can't do it?

But the electronic clock with LCD screen is not so difficult that even the top students don't know where to start.

Finally, he saw Xiao Xuan move his fingers, and then, he saw Xiao Xuan reach out to the breadboard, and then, he took off a 1k ohm resistor inserted in the breadboard, and then, he changed a 10k ohm resistor, and then, Xiao Xuan didn't move again.

Groove ???

boldly stepped forward and patted Xiao Xuan on the shoulder: "Xiao Xuan? ”

Xiao Xuan turned his head to look at him: "En? ”

"Is it stumped?" The classmate asked kindly.

Xiao Xuan looked at the breadboard again and shook his head: "No." ”

"That?"

At this time, Xiao Xuan sighed slightly, opened the drawer of the real table, inside was a miniature electronic clock, he connected the power supply of the electronic clock and the voltage power supply, and then adjusted the voltage, the red and black watch pen probed, the LCD screen of the electronic clock glowed, and showed the current accurate time.

This is the electronic clock that has been made, and the classmate looked at the breadboard that the various analog lines did not match, and asked, "Then what are you?" ”

"It's nothing, pass the time." Xiao Xuan paused, then as if he remembered something, he looked up and asked, "When are we leaving?" ”

The classmate blinked, but soon understood what Xiao Xuan's question meant by departure, and replied, "The plane the day after tomorrow, what's wrong?" ”

When Xiao Xuan learned from his professor that he was one of the members of the month-long electronic practice exchange program with Beijing universities last semester, Xiao Xuan was not as happy as others, but it was impossible to say in his heart that he was unhappy.

Xiao Xuan rarely does what he regrets, he did not regret missing the opportunity to go to Beijing because of his carelessness in the college entrance examination, and the science major of Qingdao University is also one of the best in the country, as long as he works hard, he can study well anywhere. This practical exchange, is to allow him to go to the ace of the University of Engineering to study ladder, his major is in recent years in the rise of engineering in China, the country's first-tier cities, especially the Pearl River Delta region are in need of this professional counterpart, Xiao Xuan has always wanted to improve this skill is not for future job opportunities, but hope to be able to explore this profession more deeply, rather than superficial.

Maybe studying a profession is really boring and hard, but he is full of curiosity about this unknown.

And now, it's the first step towards this unknown.

However, he suddenly hoped that the exchange could be postponed a little longer.

Thinking of the time when she had dinner with Shui Qingyuan yesterday, it was obvious that everyone could see that she was very reluctant to him, and her mouth was also pouting and pouting all night, even if he kissed and kissed, she was still unhappy. But this guy still doesn't care, let him study hard, it's best to do a closed style, and the two of them don't contact each other during this period.

He repeatedly promised that he would definitely make one phone call a day, and each phone call would be guaranteed to last more than an hour. As a result, Shui Qingyuan hurriedly explained, saying that she didn't mean that, she just felt that the two of them would not see each other for a month, and she couldn't stand it.

I'm used to it, except for class, the two of them are almost glued together, and they don't feel annoyed at all when they face each other for such a long time, but when they are separated every day, they are looking forward to the next meeting.

Xiao Xuan thought of this and laughed unconsciously.

And the classmate who had been standing next to Xiao Xuan shuddered, and was about to leave to give Xueba a quiet space, but Xiao Xuan stopped him.

"Do you have any different colors for the light-emitting diodes?"

The classmate was stunned and nodded: "What color do you want?" ”

Xiao Xuan thought for a while: "Is there pink?" ”

The diodes are generally red, followed by orange, and the diodes in the real yàn room are basically used for real yàn projects, so most of them use more eye-catching colors, and the pink required by Xiao Xuan, few people use this color.

The classmates have been thinking about what Xiao Xuan is going to do with the pink diode. If it is an alarm, then the flashing pink lights when calling the alarm are also quite cute.

"There should be a material room." He replied with some uncertainty.

Xiao Xuan nodded: "Thank you." ”

Then he walked out of the real yàn room, leaving his classmates with a confused face.

He shrugged, picked up the electronic clock made by Xiao Xuan, and began to study how Xiao Xuan overcame the problem to make such a small and delicate electronic clock.

But after a while, Xiao Xuan came back with a box, and the classmate glanced at the box, and for the first time in his life, he knew that the diode could have so many such girlish colors

I have to say that he is still too young.

Xiao Xuan didn't care that someone was next to him, and started to build a circuit directly on a laptop to do simulation, and ordinary people need to refer to a book or draw the circuit on scratch paper first, and Xiao Xuan directly began to use a mouse to get it on the computer, which is really admirable.

The classmates watched Xiao Xuan click on a number of diodes on the computer, and then began to put the diodes together into one, heart-shaped?

Heart-shaped? And it's a program of running water lights, and the flowing water lights made up of various girls' colors are lit up little by little according to the time specified by Xiao Xuan.

What is this for? Propose?

How long Xiao Xuan wrote the program and how long did he do the simulation, and how long the classmates watched it on the side.

Until the simulation was over, the classmate looked at so many diodes shining as if he had watched a performance, and the lights could spell the word "loveyou", and he completely understood what Xiao Xuan wanted to do.

It's really a hero who is sad to pass the beauty pass

Xiao Xuan turned his head and found that the person was still there, he raised his eyebrows: "It's 6 o'clock, aren't you eating?" ”

The classmate smiled: "Are you proposing marriage?" ”

Xiao Xuan blinked and smiled slightly: "No, it's a confession." ”

The classmate also blinked: "Need help?" ”

Xiao Xuan pondered for two seconds and nodded: "Then thank you." ”