Chapter 114: Reversible Computers
114.
"This ...... This is completely the Xiuzhen version of the integrated circuit......" Cheng Li was shocked in his heart.
On Earth, the integration of logic circuits is achieved through transistors, and in the dantian of the cultivators, there are even door components with similar functions.
This made Cheng Li can't wait to see the functions of other door components.
So Cheng Li began to carefully observe the effect of each gossip door.
"Kanmen, play the effect of 'or door'. ”
"Xunmen, I just saw it, it's a 'non-gate'. ”
"The shaking door has the effect of 'and non'. ”
"Leaving the door is or is not the door...... Is the door and NOT gate...... The dry door is an XOR door ......"
"Eight Bagua Gate components, corresponding to 7 logic gate circuits, and 1 unit gate that does not take any action......"
Among them, AND, OR, and NOT are the three basic gate circuits, and other AND gates, or NOR gates, are spliced together with the three basic gate circuits.
Like the XOR gate, it is constructed from 2 AND gates, 1 OR gate, and 1 NAND gate.
On the Taiji cyclone, the XOR Gate is just a simple component of the Qiangua Gate, which achieves the same logical operation effect.
"This gossip door component feels like a black box technology! I don't understand how it implements logical operations in it. And it seems to be better and more concise than the transistors on earth. ”
However, something even more unbelievable for Cheng Li is still to come.
The method he entered was automatically split and slipped through all the Bagua Gate components in the Tai Chi cyclone.
This made Cheng Li feel ...... This is the first time the Tai Chi cyclone is running, and the test machine is warmed up?
Sure enough, after all the door components had Yin Yang Lingzi passed.
All the yin and yang spirit sons, just like the ebb tide of the sea, actually returned directly to the same way.
What surprised Cheng Li even more was that he found that when the Yin Yang Lingzi returned the same way and passed through the door component in reverse, it would be restored to the state before the door component!
"What! Since the logical operation of this Bagua Gate component is reversible? This is a reversible computer?!"
It's no wonder Cheng Li was so surprised.
On Earth, the modern transistor computer system is not without its flaws.
One of the main drawbacks of transistor computers is energy consumption.
There are many reasons why the CPU consumes so much energy and generates a lot of heat, such as Joule heating generated by resistors, heat generated by current passing through transistors, etc.
But there is a more important reason for this, which is that the logic operations performed by the CPU of a classical transistor computer are irreversible.
For example, with a gate circuit, the logic operations performed are:
When 0 and 1 are entered, 0 is output.
When 0 and 0 are entered, 0 is output.
When 1 and 1 are entered, 1 is output.
It can be seen that for every two messages that are input in the AND door, only one message will be output.
Just like Cheng Li saw just now, 1 Yin Lingzi and 1 Yang Lingzi entered the Gen Gate at the same time, but only 1 Yin Lingzi came out of the Gen Gate.
So the question is, where did the other Yang Lingzi go?
On Earth, when logic circuits are being calculated, basic gate circuits such as AND gates, or gates, input multiple pieces of information, and only output one piece of information.
In the process, the other information is erased.
According to the laws of thermodynamics, information is also a kind of entropy, and it takes energy to erase it.
Therefore, when the logic circuit performs the logic operation, the disappearance of information will be accompanied by an increase in energy consumption.
The single impact of this information energy on power consumption is negligible, but on VLSI circuits, when billions of transistors are integrated on a fingernail-sized silicon wafer, the heat generated by this additional energy consumption will cause the chip to melt locally.
This is also a huge bottleneck that restricts the development of computers on the earth.
"Before I crossed over, research on quantum computers was already beginning on Earth. The biggest feature of quantum computers is that their calculations are reversible. Cheng Li pondered.
The loss of information about the logic operation of the transistor leads to an increase in energy consumption, because its computation is irreversible.
With gate circuits, there are 3 cases where the output information is 0.
You can't make the circuit flow back in reverse and revert to the way it was before the logic was executed.
Quantum computers, on the other hand, use the quantum entanglement effect to make every step of the quantum computer's operations reversible.
Since there is no loss of information throughout the operation, energy consumption is extremely low.
But in this Tai Chi cyclone, it doesn't seem to use quantum principles, but traditional logic gate circuits. So how does it, the Bagua Gate component, achieve reversible calculation?"
Cheng Li had a few conjectures in his heart.
"There is a possibility that this information in this world is materialized 0 and 1, and because of materialization, it is easy to control the liquidity. It's also easy to make some special marks on the materialized target. Therefore, every yin and yang spirit child will be automatically marked when it passes through the Bagua Gate circuit, and then when it returns in reverse, it will be restored according to these marks. ”
"But it doesn't make sense, after all, these 0s and 1s are embodied Yin Lingzi and Yang Lingzi.
"Two Yin Spirit Sons, after passing through the door, only one Yin Spirit Son came out. It is impossible for another Yin Spirit Son to disappear out of thin air.
"Perhaps, this Bagua Gate component is a higher-dimensional structure, and the other Yin Lingzi has hidden in other dimensions, so I can't see it?"
Cheng Li thought with a big brain.
But no matter what he thought, he couldn't figure it out at all, after all, it was beyond his level of knowledge.
"It seems that I still underestimate this Xiuzhen version of the CPU. This level of science and technology is not known how many generations higher than the earth. ”
"At least, the feature of reversible computing alone can make this Xiuzhen version of the CPU have the magical effect of ultra-low power consumption and ultra-low heating. The performance potential is almost limitless. ”
Cheng Li looked at his dantian and exclaimed.
Now, in his opinion, this dantian is indeed a CPU, and this Tai Chi cyclone is the core of the CPU.
However, this Xiuzhen version of the dantian CPU, there is no doubt that in terms of design and structure, it is much more advanced than the transistor computers on the earth.
However, no matter how advanced the design structure of this dantian CPU is. Since they are all performing logical operations, the knowledge I have learned is still useful. Cheng Li could only comfort himself like this.
At this time, the 286 Yin Spirit Sons and 312 Yang Spirit Sons had all finished retreating and returned to the black fish's eyes.
Cheng Li carefully distinguished, and sure enough, the whole process was completely reversible, and the order of the 286 Yin Spirit Sons and 312 Yang Spirit Seeds was exactly the same as the arrangement when they first entered the cyclone, without any change.
At this time, 286 Yin Spirit Sons and 312 Yang Spirit Sons set off again.
And this time, they presented a queue, did not disassemble it again, and walked straight towards the components of the Kun Hexagram Gate.
Since the Kun hexagram door component is a unit door, it will not do any treatment on the yin and yang spirits, which can be described as unimpeded, which is equivalent to a doorway.
The "mimicry" law decision came to the tail area of the white yang fish through such a kun hexagram doorway, and took root in this white cloud and mist.
And at this moment, Cheng Li's divine consciousness flashed a trace of enlightenment.
It seems that in front of it, there is an invisible start button, asking him whether to start the operation.
Cheng Li involuntarily popped up in his mind and started this idea.
At this moment, all the remaining mana along the entire dantian suddenly boiled.