Chapter 775: Visit the survey ship

Although this survey ship is claimed to be for civilian purposes, all the personnel on it are from the Navy. Many people are wearing white navy sailor suits and are busy on the front screen. When you come here, you can feel To a kind of urgency.
"We all say, one minute on stage, ten years off stage." As we walked, Colonel Chen said to Qin Guan: "Our marine survey ship shoulders a major task. Therefore, we have been studying and practicing. ."
Qin nodded in view: "Comrades are very hard."
When measuring and controlling at sea, it takes only a few minutes for the satellite to fly overhead to measure and control all the required data. Now the target is to be measured and controlled because it is splashed down, so the time is even shorter.
It takes many months to go to sea, but the precious few minutes are really effective. Of course, there can be no mistakes. What does it depend on? Of course, I will start practicing now and formulate various plans.
The work of the Offshore Measurement and Control Department started very early. All equipment must be
zero-failure
to start, and no problem is allowed. All equipment must be inspected and maintained at the base terminal.
However, this is still not a guarantee. Once the equipment has a problem in the remote sea, there is no other way to get help, and it can only be solved by oneself.
Therefore, there are no idlers on the ship, and they must be personnel who are proficient in their own equipment. When it is critical, not only must they be able to use them, but they must also be able to repair them.
Standing behind a row of consoles, Qin Guan watched everyone nervously practicing and shouting slogans one by one. Qin Guan couldn't help asking, "Does this ship need a computer?"
The development of national defense is inseparable from the computer. The first detonation of the first nuclear bomb in Han was based on a hand-cranked calculator, which took months to calculate.
After that, the Chinese Academy of Sciences established the Institute of Computer Science and began to work computers. From 1956, the first generation of computers was developed. In 1958, the first electronic tube minicomputer 103 computer was successfully developed. In 1959, the 104 computer with a running speed of 10,000 times per second was successfully developed. This was the first large-scale general-purpose electronic digital computer developed in my country. Its main technical indicators exceeded those of the island country at the time. Compared to the fastest computers, it is not inferior.
Han's development on mainframe computers is not slow.
In 1965, he began to study the third-generation computer, and in 1973 successfully developed the integrated circuit 150 computer. The 150 computer has a word length of 48 bits and a calculation speed of 1 million times per second. It is mainly used in petroleum, geological, meteorological and military departments. In 1974, the DJS series of computers with integrated circuits as the main components were successfully developed.
For aerospace measurement and control, tracking satellites in the sky requires extremely high computing power. Now, after hearing Qin Guan’s question, Colonel Chen said:
Yes, under our feet, it’s the 013 that we developed ourselves. Computer, its calculations are familiar, reaching 10 million times per second."
The computer is the brain of Yuanwang-1. During the development of this measurement and control ship, the 013 series of computers that were developed only in 1976 were used. The calculation speed of this supercomputer is still good.
Hearing Colonel Chen say 10 million times per second, even Qin Guan nodded: "Yes, not bad."
At this moment, suddenly, a technician stood up and shouted: "The computer is malfunctioning, and the data can no longer be calculated!"
When I heard this voice, even Colonel Chen was taken aback: "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. This was the result of a simulation experiment, but the measurement and control curve behind it could not be displayed.
And beside him, on a monitor, the numbers were constantly beating and flickering, but it was abnormal.
"Troubleshoot immediately!"
At this time, Colonel Chen could no longer greet Qin Guan. The ship had just set out to sea and performed its mission for the first time, especially now, seeing that the mission will be officially launched soon. Who would have thought that it would appear at this juncture. problem.
If the computer does not work normally, the measurement and control task this time will not be completed. Although there is the Yuanwang-2 measurement and control ship for backup purposes this time, it would be a shame for everyone if we do not have any results this time.
They are very anxious.
Colonel Chen's fingers began to tap 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." Qin Guan suddenly felt the benefits of leaving the back door this time. He could find Lisa at any time, and Lisa would definitely be able to perceive everything she saw.
After a while, Lisa's lazy voice came: "This is a hardware failure. It should be a part of a component that is soldered and has poor contact."
"Then what to do?"
"When the next big storm comes, maybe it will be fine. I don't know where the solder joints are. I have to take them apart and look at them piece by piece."
"Okay, that's it. I'm going to hold a meeting. Our progress is extremely smooth. When you come back, there will be surprises."
After speaking, Lisa cut the line unilaterally.
Lisa was busy with her business, and Qin Guan could only continue to wait here, watching everyone continue to operate on the keyboard, Qin Guan finally said: "Chen, is it a circuit failure?"
When a computer fails, it is divided into software and hardware. Now everyone is thinking of a solution based on software, but no one thought it was a hardware problem.
Qin Guan said it was a circuit failure.
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 it is the computer of later generations that has a hardware problem, it has never been a bad thing to replace it, and there is no way to fix it, but now, they can only fix it.
Moreover, there is no way to change it.
Following everyone, Qin Guan entered the cabinet below. The air conditioner inside was rumbling. The countless cabinets were dazzling.
Colonel Chen opened one of the cabinets, and the dense lines made Qin's scalp numb when he watched it. At this time, Qin Guan suddenly realized how backward this thing was.
Listening to data is very advanced, 10 million times per second, which will soon be hundreds of millions of times, but this computer is completely assembled manually.
That's right, it's manual assembly, and the dense lines inside are all manually welded.
Looking at the huge solder particles, you know that the craftsmanship is limited. There are traces of rosin on it, and I don't even know that I need to clean it. Such a circuit board will be if there is no problem.
The chip above is also marked with foreign words.
When entering the late 1970s and 1980s, due to the backwardness of domestic chips, domestically produced computers have begun to purchase foreign-produced VLSI circuits.