"Little brat, what are you looking at here?”
The voice of the old maintenance worker, Moss, came from behind him. Danny turned around and saw Moss smiling at him with a tool bag on his back. Danny said a little sadly,""Oh, the library computer was thrown into the storeroom. I want to take a last look!”
"Why are you looking at that broken thing? It broke down a long time ago. The library even asked me to repair it. How can that kind of electrical equipment be repaired? Although the circuit board is not big, you know that there are thousands of components in an integrated circuit. There are so many pieces on it, there's no way to repair it!”
Danny nodded." That's also the most complicated electrical device I've ever seen. It's indeed difficult to repair if it's broken. Of course, I mean the way we repair it. If we find out that the broken parts are replaced, it's very simple!”
"You'll have to bring it to a big city to exchange for parts. I don't think the community would be interested in doing that. This thing is called a computer. I've used it before, but other than typing letters, it can't even calculate one plus one.”
Danny knew that he had only come into contact with the DOS system, so how could it count? But when he thought that he would never see a computer again, he felt sad.
As if seeing Danny's expression, Moss said,""You're very interested in it, aren't you?”
Danny nodded!
Old Moss smiled cunningly. He took out a bunch of keys from his pocket and waved them in front of Danny. Danny's eyes lit up and he immediately understood."The key to the storeroom?"
"Shhh…!"
Danny was so excited that he almost went crazy. He said gratefully,""Uncle, thank you so much. After we leave, I'll go in and take a look!”
"Hmm? Who told you to go in and fix it?"
Danny's expression froze, and his heart sank.
Old Moss turned around and left, waving his hand as he walked.""When there's no one around after work, you can carry it home!”
Danny was stunned as if he had been struck by lightning. Carry him home? This kind of news was no less than the Martians landing on Earth. It took him a while to recover from his shock. Suppressing the surging excitement in his heart, he stuttered,""You, you mean? You want me to carry it home?"
"Carry it back. It's not something they need anyway. They won't notice. I forgot to tell you that I'm the manager of the utility room.”As he spoke, Old Morse's figure had already walked far away.
Danny stared blankly at Old Morse's receding figure. This news was undoubtedly earth-shattering for him. He couldn't believe that he was dreaming. Even if he was dreaming, he had never dreamed of such a thing. What kind of desire did that computer have for him?
When he got home, Danny was so excited that he couldn't even sit or stand. He was so happy. Even if he couldn't fix it, he had a keyboard to practice typing on, and he also had the hardware to conduct physical research.
In the evening, after the people in the community general affairs office got off work, Old Moss helped Danny open the door of the utility room. Danny disassembled the broken computer into a case and a monitor, and then moved it back home in batches.
The computer was placed in the cabin behind the house. After cleaning the workbench, Danny excitedly got up and started to install it. As soon as he touched the computer, his hands couldn't stop trembling, and his heart couldn't calm down for a long time. He never thought that he would be able to touch it like this one day. It was like a dream.
He laid the main computer case flat and placed the monitor on the main computer case. According to the knowledge he had learned from the book, Nick began to connect the wires. After confirming that the installation was done properly, he connected the power.
No reaction? It seemed that the hardware was broken. If it was a software problem, it would be much easier to deal with. If it was actually the hardware, then it would really be a headache. Seeing this situation, according to the rules of maintenance, the first suspect should be the power supply. If it was the power supply problem, it was still relatively simple. As a power supply part, the structure would not be very complicated. Just like a television using more than 200 volts of household electricity, a computer also used household electricity. Although the operating principle was very different, the power supply part was similar.
After opening the main box, Danny picked up the Multimeter and directly measured the output voltage of the power supply. He found that there was no problem. This really gave him a headache. Under the dim light, Danny began to carefully study the circuit on it. Although each type of mother board was different, the principles were similar. With the knowledge he learned from books and the basics of electronics, after a few hours of research, he had a clear understanding of the design of this mother board.
Then, Danny began to measure the voltage with a multi-meter. Finally, he found a place where the voltage was abnormal. After a step-by-step deduction, he found an inconspicuous integrated circuit.
Looking at the circuit structure, this should be an integrated block with logic functions that controlled the self-test of the central processor. If it was broken, it should cause the situation where the central processor could not be loaded. Without the function of the processor, the subsequent parts could not be loaded.
To ensure accuracy, Danny checked several times and found that the abnormal voltage could be connected to the integrated block. That's right, this integrated circuit was indeed broken. This was very unfortunate, but it could also be considered a blessing in disguise. Because if this part was broken, it might cause the CPU to burn. If the CPU burned, the computer would not be repaired unless the CPU was replaced. Danny could not do that. There seemed to be no problem with the CPU, but from a certain point of view, it was more difficult to break the integrated circuit than the CPU. The CPU was still sold, but this integrated circuit was not common. Basically, it was not sold.
Danny began to pace around the room in frustration. He could not find anything to replace it, because integrated blocks were rarely seen in household appliances. It was impossible to find a control integrated block dedicated to the central processor. Suddenly, a bold idea appeared in his mind…
The next day, Danny went to the library early in the morning to borrow the necessary materials. He found the internal structure of the integrated block. The integrated block was as big as a fingernail, and there were almost a hundred components integrated on it. Although Danny knew the principle, he still needed a blueprint if he wanted to make it himself.
The manufacturing process of the integrated circuit required a lot of specialized equipment, so it was impossible to make an integrated circuit. However, the integrated circuit was also composed of many transistors. In theory, it could also be made with ordinary transistors. This was only a theory, and it was not that simple to implement.
Danny spent the whole day drawing the circuit diagram. After all, the integrated circuit was very different from the ordinary one. Although the function was the same, the parameters were definitely different. He could only understand the circuit structure from the diagram. The rest of the circuit had to be designed by himself. There was only one purpose, which was to simulate the same function as the integrated block.
This book comes from：m.funovel.com。