Han Rongrong's score was good, with full marks, but compared to Li Anle, it was a little worse. In fact, Li Anle's calligraphy was too good, and there were always extra points on the paper, so Han Rongrong had to settle for second place.

"I'm really angry."

"snort."

Han Rongrong decided to ignore this little liar, shameless, bad guy, and little bastard all morning.

However, Han Rongrong couldn't help but glance at it before he could wait for a lesson. Li Anle was lowering his head to draw a circuit diagram. He was tinkering with a simple infrared wireless remote control device. This was very simple. Li Anle planned to use it as a car light remote control.

.

He couldn't play with automatic start and stop, but it was not difficult to turn on the lights and the horn. He thought about getting a battery to connect the lights and horn, but before this person could reach the car, the headlights were flashing.

The loudspeaker sounded.

It would be best if we could simulate the sound of a sports car starting up. That guy wouldn't be the brightest kid in the entire Satoyama Commune.

"What is it?"

"220k resistor?"

"Infrared receiving tube?"

"led lights"

Han Rongrong couldn't understand the circuit diagram, but she knew all the marked words, but when combined together, she was a little confused.

"Li Anle, what are you doing?"

Unable to hold back his curiosity, Han Rongrong finally asked Li Anle, "Circuit diagram of the infrared remote control receiver."

“What is an infrared remote control receiver used for?”

"Well, don't you have any toys?"

"No, my electric car can run when you drive it."

What a car, what a coincidence, Li Anle Digu. "It doesn't have a remote control?"

"No."

"I know the remote control. You are talking about the kind of tank with wires. I have played with it in the capital."

Han Rongrong said, "Will you still do this?"

"Mine is similar to it, but I don't need a wire. What I want to do is an infrared wireless remote control receiver." Li An said with a smile, seeing Han Rongrong being a little confused.

"Like a telegram."

"To put it simply, for example, I have a wireless remote control toy car. The toy car is now outside the classroom. I can start it with the remote control in my hand." Li Anle placed his pencil case and Han Rongrong's pencil case.

"Really, how did you do this?"

"Let's learn. I bought a lot of radio books."

This is true, not only radios, but also cars, etc., I bought a lot of various books, and some were redeemed from the Xueba space. "If you want to learn, you can make it yourself after reading this book."

"After speaking, he took out a thick dictionary book and handed it to Han Rongrong.

"Have you finished reading this?"

"yes."

Li Anle said heartily, that's not it. You are manufacturing TVs, radios and so on. It's really so simple. Fortunately, the content is not complicated and he learned it fairly quickly. Han Rongrong looked at this little liar. Although this guy was a bit naive,

He is bad, he also likes to lie to people, and he is thick-skinned, but he has a really good mind and studies hard.

"What's wrong? Otherwise, I'll give you this book."

This book was written silently by Li Anle, so there is no use in reading it.

"No, thank you."

"Why are you so polite?"

"Hey, you're not angry anymore."

"Huh, I'm angry."

"oh."
Chapter completed!