When talking about flash memory, we have to mention "memory" - the memory of the memory stick, the memory of the running memory.

In the 8+128G trademark of the mobile phone factory. The 8 in the front is memory, and the 128 in the back is flash.

In the computer configuration, 8G, 16G are memory. 256 of 256G SSDs are flash memory.

Memory is known to be much faster than flash. This is because it does not need to store data after a power failure, and structurally does not need a charge potential well to hold electrons. In this way, the electrons can quickly pass through the gate or drain to complete a charge and discharge process.

The reason why flash memory is slow is that it has an additional process to save electrons in the structure, and preserving electrons allows it to maintain the current data structure even after the power is off, and then the transistor state can be output by comparing the amplifier externally to sense the state of the transistor.

In the overall structure of flash memory, it is currently divided into NOR flash memory and NAND flash memory.

The NOR reads extremely fast, but erases extremely slowly. In contrast, NAND is not as fast as NOR, but it erases ridiculously fast.

As a result, NOR flash memory is typically used for firmware that needs to be read frequently and not erased.

NAND flash memory, on the other hand, is used in situations where data needs to be read and deleted frequently.

The SLC, MLC, and TLC particles mentioned by later generations of SSDs are nothing more than different architectures of NAND flash memory.

On the eve of the Spring Festival, Su Yuanshan personally ran down the USB standardization organization, USBIF has been officially established, and the participants on the Yuanxin side are mainly Xie Xiaochun from the CPU team and Mei Jie's buddies. Since the main members of the organization are in Silicon Valley, the west, the organization is mainly promoted by Xinghai, Intel, and Microsoft.

At present, the standard has been formulated, and the first version of the standard will be issued in the middle of the year at most.

As with all new standards, there is a long process from promulgation to market acceptance. In fact, it wasn't until the advent of USB-based flash drives that the USB standard began to spread rapidly.

It is based on this that Su Yuanshan asked Li Mingliu to form a team specializing in NAND after making phased progress.

Because not only USB flash drives, but also MP3s, SSDs, and even the external memory of all mobile phones...... It's all NAND flash!

In the Hereafter, it is no longer the one who has the memory to win the world.

It's about the one who has the flash to get the world.

......

Su Yuanshan saw that Li Mingliu was still a little hesitant, and after thinking about it, he said very cautiously.

"What restricts chip technology now is the manufacturing process. But the theory must be ahead of the process, which is the iron law of the semiconductor industry. ”

"We can't wait until we need an axe to mine for iron, but we have to get it ready first—even if it's blunt, even if it's just a prototype, it's better than cramming. ”

Saying that, he glanced at the group of people around him who were engaged in technology, and said slowly: "Our Yuanxin has come so far, isn't it all about being one step ahead?"

When Li Mingliu heard this, he immediately nodded: "Understood, I'll form a flash memory team as soon as I go back." And if I have time, I'll keep an eye on it myself. The principle of flash memory is simple, but the main difficulty is in the process. But now that it's a theoretical breakthrough, we don't need to think about the process for the time being—we don't need to make it right away to make money, right?"

"It doesn't seem to have much use for this thing now, right?" Qin Weimin looked at Su Yuanshan.

"According to the grapevine, it's coming. Su Yuanshan said with a smile.

The first CF card to use flash memory technology was officially launched this year.

With these three areas said, there are only a few technologies that are relatively not so important, or that do not need to be rushed forward.

After all, Yuanxin has its own incubation mechanism.

For example, a long time ago, not long after Linux came out, Yuanxin invested a team to modify Linux to support YX01 CPUs. (See Chapter 96)

The group is still not disbanded, and has been transferred directly from the EDA department. Since then, Yuanxin has been raising not to mention, but also let them undertake the development of the Chinese operating system of the YX1201 mobile phone.

Today, the team has gathered many people who are interested in operating systems, and has gradually grown into a team of thirty or forty people.

Team leader Mao Yonggang's frequent slogan is: We want to become the Microsoft of Yuanxin!

For guys like Bill Gates, Su Yuanshan has always been very vigilant.

Therefore, even if the importance of this team is not lost to the mobile phone department in the future layout, he still does not dare to let them out easily, let alone raise their status too much.

And Su Yuanshan also arbitrarily interfered with their idea of developing to the desktop system, only letting them sneak into the village, while optimizing the enterprise-level application of linux to make it more suitable for the development environment, and at the same time increasing the optimization of the YX architecture CPU.

In short, the Linux+YX institution is still going to the enterprise ecology on the desktop system.

As for the home entertainment ecosystem...... That's it.

——With Apple and Microsoft as enemies at the same time, Su Yuanshan really doesn't have that confidence now-you know, the application ecosystem can't be built in a day or two. As long as he dares to develop a system similar to Apple's OS based on Linux or Unix and enter the desktop market, Apple and Microsoft will be able to beat him up immediately.

Well...... The operating system of a handheld smart mobile device is not included.

......

Finally, Chen Jing announced the use of scientific research funds last year.

"Last year, the total amount of pure scientific research expenditure, including salaries, equipment purchases, and test consumption, was 870 million yuan. This does not include the establishment of the Shanghai Science and Technology Park and the establishment of the Internet Center of the Special Administrative Region. ”

Chen Jing looked at the document and glanced at Su Yuanshan with a smile.

Su Yuanshan was a little embarrassed.

Originally, the pure scientific research fund was only 500 million yuan, but it was bought one free and one free, a servo motor project was added, and there was a precision instrument cooperation unit in the back, plus a temporary chemical laboratory and the acquisition of Lin Benjian's team, the establishment of a Silicon Valley R&D center, and the expansion of various laboratories...... As a result, the funds rose by 370 million.

"According to the established plan, this year's funding should be 1 billion yuan, but now it seems that it is not enough. Chen Jing thought of the application handed over by the lithography machine center a year ago, and her head was big: "This year, we will establish a research and development center in the north." ”

"Let's take two billion for the time being, I won't spend money indiscriminately. Su Yuanshan gritted his teeth and said: "I have a hunch that hundreds of millions of yuan will be wasted just by tape-out this year." ”

Chen Jing was stunned, ignoring the fact that he was in a meeting at this moment, lightly patted the table, and glared at him: "Phew!

And then...... Qin Weimin, Tian Yaoming, Li Mingliu, Gao Xiaodi and others who may want to tape out this year will immediately help.

"Yes, yes, yes......"

"It's just ......"

"The ...... of the New Year What are you talking about?"

Actually, I really want to explain the difference between cache, memory, flash, NOR flash, NAND flash, SLC, MLC and TLC...... However, after thinking about it for a long time, I found that it is impossible to explain the principle of the MOS field tube effect without making videos and graphs.

Day dog, the title of the previous chapter is wrong. What the hell is NADA?

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