Chapter 775

Although the survey ship is declared to be for civilian purposes, all the personnel on it are from the Navy. Many people are busy on the front screen wearing the Navy's white sailor's clothes. When they come here, they can feel a sense of urgency.

"We all say that one minute on the stage and ten years off the stage." as we walked, Colonel Chen said to Qin Guan, "our marine survey ship shoulders a major task, so we have been studying and practicing."

Qin Guan nodded: "comrades, it's hard."

In maritime measurement and control, we only use the time when the satellite flies overhead to measure and control all the required data. Now we need to measure and control the target, because it splashes down, the time is shorter.

It often takes months to go to sea, but what is really effective is these precious minutes. Of course, there can be no mistakes. What does this depend on? Of course, we should continue to practice and formulate various plans now.

The work of the Marine Measurement and control department began to be prepared very early. All equipment must start from "zero fault", and no slightest problem is allowed. All equipment must be tested and repaired at the base wharf.

However, this is still not guaranteed. In the distant sea, once there is a problem with the equipment, there is no other way to get help, which can only be solved by our own strength.

Therefore, there are no idle people on board. They must be proficient in their own equipment. At a critical time, they must not only be able to use, but also be able to repair.

Qin Guan stood behind a row of consoles, watching everyone practicing nervously and shouting slogans. Qin Guan couldn't help asking, "do we need computers for this ship?"

The development of national defense is inseparable from computers. The Han country detonated its first nuclear bomb at first, relying on a hand-held calculator for several months.

After that, the Chinese Academy of Sciences established the computer institute and began to work on the computer. It began to develop the first generation computer in 1956. In 1958, the first electronic tube microcomputer 103 was successfully developed. In 1959, a 104 computer with a running speed of 10000 times per second was successfully developed. This is the first large-scale general-purpose electronic digital computer developed in China. Its main technical indicators exceeded those of the island country at that time, and it is not inferior to the fastest computer developed by Niu country in the same period.

Han's development on mainframe computers was not slow.

In 1965, he began to study the third generation computer, and successfully developed the large-scale computer 150 with integrated circuit in 1973. The 150 computer has a word length of 48 bits and a computing speed of 1 million times per second. It is mainly used in petroleum, geology, meteorology and military departments. In 1974, DJs series computers with integrated circuits as the main components were successfully developed.

For aerospace measurement and control, it certainly requires very high computing power to track satellites in the sky. Now, after hearing Qin Guan's question, Colonel Chen said: "yes, at our feet, is the 013 machine developed by ourselves. Its computing proficiency has reached 10 million times per second."

The computer is the brain of yuanwang-1. In the development process of this measurement and control ship, 013 series computers developed only in 1976 were used. The operation speed of this supercomputer is still good.

When Colonel Chen said 10 million times a second, even Qin Guan nodded: "good, good."

Just then, suddenly, a technician stood up and shouted, "computer failure, data can't continue to calculate!"

Just hearing this voice, even Colonel Chen was stunned: "what's the matter?"

"I don't know." the other Party pointed to the screen in front of him. At this time, a measurement and control curve was being synthesized on the screen, which was the result of the simulation experiment. However, the later measurement and control curve could not be displayed.

Next to him, on a monitor, the numbers are constantly beating and flashing, but it is abnormal.

"Troubleshoot now!"

At this time, Colonel Chen could not care to greet Qin Guan. The ship had just gone to sea and carried out the task for the first time. Especially now, it seems that the task will be officially launched soon. Who could have thought that there was a problem at this juncture.

If the computer doesn't work normally, the measurement and control task can't be completed this time. Although there is yuanwang-2 measurement and control ship for Backup this time, it's a shame for everyone if our side doesn't achieve any results this time.

They are in a hurry.

Colonel Chen's fingers began to beat on the keyboard, hoping to find the fault, but it was useless. There was no response at all, and the computer was out of control.

"Lisa, Lisa." this time, Qin Guan suddenly felt the advantage of leaving the back door. He can find Lisa at any time. Moreover, Lisa must be able to perceive everything he sees.

Later, Lisa's lazy voice came: "this is a hardware failure. It should be a faulty soldering and poor contact of a component."

"What about that?"

"Maybe it'll be better when the next big storm comes. I don't know where the faulty welding is. I have to open it and look at it piece by piece."

"Well, that's all. I'm going to hold a meeting. Our progress is very smooth. When you come back, there will be a surprise."

With that, Lisa unilaterally cut off the line.

Lisa was busy with her business, and Qin Guan could only wait here. Watching everyone continue to operate on the keyboard, Qin Guan finally said, "Colonel Chen, is it a circuit failure?"

Computer failure is divided into software and hardware. Now, everyone wants a solution in software, but no one thinks it's a hardware problem.

Qin Guan said it was a circuit fault.

Hearing Qin Guan's reminder, Colonel Chen suddenly realized: "yes, there may be a problem with the third cabinet. Let's go down and look for it one by one!"

If there is a hardware problem with later computers, they can't repair what's bad. But now, they can only repair it.

Besides, it can't be changed.

Following everyone, Qin Guan entered the cabinet below. The air conditioner in it was rumbling. Countless cabinets were dazzling.

Colonel Chen opened one of the cabinets and the dense lines made Qin feel numb. At this time, Qin Guan suddenly realized how backward this thing was.

Listening to the data is very advanced, 10 million times per second, hundreds of millions of times soon, but the computer is completely assembled manually.

Yes, it's manual assembly. The dense lines inside are manually welded.

Look at the huge solder particles, you know that the technology is limited. There are still traces of rosin on it. I don't even know to clean it. Such a circuit board will go to hell if there is no problem.

The chip on it is also marked with foreign characters.

In the late 1970s and 1980s, due to the backwardness of domestic chips, domestic computers have begun to purchase VLSI produced abroad.