Under Wang Xuexin's "confusion", Ban and Chen were completely impressed by China's advanced technology. They had never been so excited as they are now... It's not that they didn't want China to be more advanced, but they were learning
In the process, I felt the gap with the great powers and felt inferior. Now I suddenly discovered that China is at the top of the world and is unique. The ecstasy cannot be described in words.
There is not much difference in the research and development of electronic tube computers compared to relays. Generally speaking, all relays are replaced with electronic tubes, and everything else is basically the same.
Install the latest version.]
The reason why I say "basically consistent" is because Wang Xuexin does not intend to simply upgrade the relay computer to a tube computer. He wants to achieve a span...
As mentioned before, Wang Xuexin has the skills to know what to do, so why does he have to go up step by step?
It is well known that the first computer in the world was the electron tube computer Eniac, but few people know that when Eniac was invented, a more advanced computer was already ready to go online. This computer was called edvac.
The reason why Edvac failed to become the first computer was simply because the military was anxious to have a tube computer online, so it could only hand over Eniac, which could be said to be "backward" at the time but had been successfully developed and used...
The most fundamental difference between the two is that the latter uses a type of memory called "mercury delay line memory" as a memory to assist computer calculations.
If there is no such thing, the data storage needs to use punched paper tape as Wang Xuexin mentioned before.
The inconvenience of using paper tapes for storage is obvious. If there are too many paper tapes, the number of data may increase to an astronomical number. This is not only high cost, but also has disadvantages such as low efficiency, long time consumption and easy data damage.
"Mercury delay line memory" solves this problem very well.
Wang Xuexin explained to the two of them: "This thing is actually a mercury column. Simply put, it uses the delay of sound propagation to convert electrical signals into sounds, and propagates them from one end of the mercury column to the other end, and then the sound is transmitted from the other end.
The signal is converted back into an electrical signal. If the propagation time takes one second, it is equivalent to storing the data for one second!"
The two of them were stunned for a while after hearing Wang Xuexin's words. After a while, Ban Haolin asked: "Captain, if it is only stored for one second... then what's the use?"
"So we need to add a regenerator to it!" Wang Xuexin replied: "This regenerator can continuously input this signal repeatedly to achieve the purpose of storing data!"
Ban Haolin still didn't understand: "Captain, for this second of data... do we need to go through so much trouble?"
Wang Xuexin couldn't help laughing when he heard this: "Do you know how much data can be stored in this second?"
"How much?" Ban and Chen asked in unison.
"1,000 people!" Wang Xuexin replied calmly.
This number instantly frightened Ban and Chen...
"One...a thousand!"
"Can you save that much?"
It is sometimes difficult to imagine technological things. How can a thousand bits of data be stored in one second? But it is actually a pulse device installed at this end of the mercury column. This pulse device can emit sound waves a thousand times per second...
To be precise, it is not to emit sound waves a thousand times, but to choose to emit or not emit based on "1" and "0", that is, if there is sound, it means "1", and if there is no sound, it means "0".
"Do you know what this means?" Wang Xuexin asked: "This means that the data that a mercury tube like this can store would require 1,000 relays or 1,000 electron tubes to store it in the traditional way, and a lot of paper tape would be needed for input!"
Ban and Chen thought about it. Comparing the two, it was obvious that the storage method of mercury tubes was more economical and reliable, but they still found it hard to imagine that it could still be like this...
After being silent for a while, Chen Jiefeng hesitated and said: "Captain, although we... don't want to pour cold water on you, but we don't dare to take on this porcelain job without the diamond. We don't even have a clue about this matter."
, maybe I can’t do it!”
"Yes, Captain!" Ban Haolin also said: "It sounds like a heavenly book to us, let alone making this thing? What's more, we in China don't have this equipment..."
"I didn't ask you to do it!" Wang Xuexin said: "You just need to improve!"
"Improvement?" Chen Jiefeng understood the meaning of Wang Xuexin's words: "Captain, do you mean that this thing already exists?"
Wang Xuexin nodded.
Although the tube computer was invented relatively late, the "mercury delay line memory" was invented during World War II.
"This kind of memory is used in radar displays!" Wang Xuexin said: "And we in China just bought a radar production line from Yingjiang..."
This is actually a filtering device unique to radar. Simply put, it stores the reflected signal through the memory, cancels out the sound waves reflected by stationary objects, and leaves behind the sound waves reflected by moving objects.
In this way, only the position of the moving object is displayed on the display screen. Unexpectedly, this device later became a storage device for computers.
Ban and Chen immediately cheered after hearing this.
If this kind of memory is readily available, wouldn't it just be used directly on the computer as a storage unit?
But it won't be that simple.
Wang Xuexin added: "The problem is that the storage unit on the radar is relatively short. We need a longer mercury column. Its length is best controlled within one second of the sound wave transmission time. If it is too long, it will cause too much signal loss and cannot be received correctly.
.In addition, the radar memory does not have a regeneration device, so we need to design a regeneration circuit, that is, the signal received by the receiving end is used as an input signal again!"
"These are not difficult!" Ban Haolin said confidently: "If we can't even do these, we will be embarrassed to see the leader, and we will go home and plant sweet potatoes!"
As he said this, several people laughed.
This is indeed not a difficult task. The point is that China can produce it and has a production line, so it is very convenient to make improvements. For example, if you want to lengthen the mercury column, you only need to contact Su Liguo and make a request.
Watching Ban and Chen leave, Wang Xuexin couldn't help but think about a question: the development of computers is called the third industrial revolution in modern times.
The reason why modern eagle sauce is ranked number one in the world is not only due to military reasons, but also because it has led the third industrial revolution.
Now, what if China leads this industrial revolution?