Suddenly, Cao Jianli stopped talking, and a strange gaze floated in her eyes. This gaze was immediately captured by Qin Zhenhua.
Two people wearing grassland costumes were driving a large flock of sheep from a distance and came back. They were all riding on horseback and still looked very calm. However, the life on the grassland for many years has made the two of them.
His figure became a little haggard, and his face looked a little black because it was often exposed to the sunlight. He had white hair on his forehead, but the outline and appearance could vaguely correspond to something in his memory.
At this moment, Cao Jianli's breathing became rapid, but in just a few seconds, she adjusted her mood.
"Erzhuzi, is this your home?" Cao Jianli asked.
"Yes, I grew up on the grassland, and this is my home." Wang Erzhu said: "We grassland people migrate with the grassland at any time. Our family also has no place to live. In fact, I have always been
Everyone wants to take their family to the grassland city to live a leisurely life, but their family just refuses."
Wang Erzhu introduced to Cao Jianli and Wang Liming. After hearing his words, Wang Dazhu said, "We grassland people have always liked this grassland. The sky is high and the earth is vast. If you go to the city, you will have to get sick even if you hold it in your arms."
While talking, Wang Erzhu's mother had already ridden a horse and was greeting everyone next to the grassland bag. The grassland woman named Qi Muge had a smile on her face: "I saw this car facing us from afar
As I came over, I knew that Erzhuzi was back. Please come in."
As they said that, they lifted up the curtain of the grassland bag and greeted everyone in. Due to Wang Erzhu's relationship, they had learned fluent Chinese.
When we were entertaining foreign guests, we chose the location at Wang Erzhu's home. In recent years, they have attached great importance to this matter. If there are any customers in the first machine factory, Wang Erzhu will bring them here. According to the grassland
The customs come to entertain everyone.
And now, she greeted everyone with a smile, and then she saw Cao Jianli. A trace of suspicion seemed to flash in her eyes. In her memory, what happened more than 20 years ago seemed to appear in her mind again.
"Hello, I've caused you trouble." Cao Jianli greeted Qi Muge with a smile. There was no memory of the past in her smile, so Qi Muge put this matter behind her mind.
, said with a smile, "No trouble, no trouble. The customers from the first machine factory are our second pillars."
The group entered the grassland bag. When they entered, Wang Liming immediately sighed: "It's not bad, there is also a TV here!"
The grassland bag is relatively large, and in the corner beside the door, Professor Wang Limin looked at the fourteen-inch TV in surprise, marveling.
"Yes, we grassland people don't have any entertainment activities, so I bought a TV for my family two years ago to understand national affairs and so on. I can only watch our central government through the UHF frequency band
A set of programs and programs in the Grassland City, but it is enough.”
"Yes, we often see news about the first machine factory on TV." Qi Muge said with a smile: "Once, I saw Erzhuzi. At that time, my father and brother, both of them were from the same place.
Delighted."
As he said that, he started to make milk tea by burning the fire.
Outside, the cry of sheep sounded, and Wang Batu drove the flock into the sheep pen, killed the sheep with Wang Dazhu, and made roasted whole sheep.
Wang Liming is very interested in this TV. On the grassland, the most important thing is that there is no electricity. How to solve this power supply problem?
Look at the top of my head, there is a light bulb in the center of this grassland bag.
But soon, you can find the answer along the wire. There are two batteries there, connected through an inverter. The inverter also has a charging function, and there is a wire, which is connected to the outside.
Seeing that Wang Liming was more interested in this, Wang Erzhu introduced: "This is all made by Brother Zhenhua, who guided me to find information and then made it himself. The wind on our grassland is strong, so we can set up a wind turbine outside to flush the electricity.
I went to the battery and used at home. This light was safe to use, so I didn't have to worry about catching fire. I had to work hard on the control circuit inside. I originally wanted to make a simple one, but Zhenhua Ge said
I have to test me and make me do more advanced. I have to tossed my spare time for a month, and at the same time, I have also spent my basic salary for a month..."
After hearing this, Wang Liming's heart was pounding. He took out a key from his pocket and started poking the screws on it with the tip of the key. Since it was made by home, those screws were easy to use.
It can be opened. At this time, Wang Liming said while dismantling it, "I used your monthly salary. Did you use a microcontroller?"
It is the mid-1980s and it is difficult to see inverters, but voltage regulators are easy to see. Many voltage regulators in this era use electronic tubes.
In rural areas, either there is no electricity or the voltage is too low to make the appliance work. Therefore, some farmers who became rich first need a special voltage regulator to bring their own refrigerators and washing machines.
Electronic tubes have been used until now, and then look at them abroad? They have not only entered the era of integrated circuits, but also entered the era of program control.
Wang Liming knew the gap between the East and the West. A few years ago, Wang Liming himself was only able to simulate circuits, and even asked Qin Zhenhua to help him go to school to give lectures, teaching knowledge about digital circuits.
If digital circuits continue to develop, they are computers. If you make such an inverter, you will definitely not be able to use Intel's 8088 chip. You use a simple microcontroller and on a separate chip, you can do it.
The functions of the computer implemented by a separate chip are called microcontrollers.
Sure enough, after disassembling it, Wang Liming even gasped: "My goodness, everything is full of chips!"
Wang Liming couldn't believe his eyes. In terms of the complexity of the circuit in the herdsmen's family, such an inverter used in herders' families, has reached the highest level in the entire country!
Needless to say, in my Capital Institute of Technology, not to mention undergraduates, even master's graduates can take such a product as their graduation design. If they win the National College Competition, they will be ranked first.