Coquettish Rebirth

When Ni Guangnan was lying in bed at night, he couldn't sleep. As soon as he closed his eyes, his mind kept wandering about the pattern scrawled on Jia Hongjian's manuscript paper. (.) He also remembered that the first pattern was a small, rectangular thing that suddenly looked like a slim matchbox in a hotel.But what is surprising is that there is a flat interface on the top of the matchbox. What is this thing?With so many years of IT and IC experience, Ni Guangnan really didn't know that such an interface existed in the world!

It turns out that Mr. Ni Guangnan came to Jia Hongjian's office after get off work, and accidentally found Jia Hongjian's discarded paper.The old man wanted to close the door casually, but subconsciously saw a pattern on the paper.After the old man picked it up and took a look, he was surprised to find that there were many things in it that he couldn't understand what they were for!This kind of doubt made the old man unable to eat after returning home, and no one could sleep soundly. He could think of that piece of paper as soon as he closed his eyes, especially the first little thing on that piece of paper. Excuse, what is this thing?

"Old Ni? Why aren't you sleeping yet? What time is it? Go to bed quickly?" Ni Guangnan's wife was awakened by the sound of Lao Ni turning over, and said in a daze. "Well, you go to bed first, I'm going to look up the information..." After finishing speaking, Ni Guangnan got out of bed after approving some clothes, went to his room and turned on the light to start looking for information.

He wanted to find information about that interface, because as an IT worker, he was also a great talent in this area, and he was shortlisted as an academician of the Academy of Engineering.It was the first batch, which made him unable to figure out what the interface was. It was like making Beckham suddenly discover a free kick method that he didn't understand at all, and making Michael Jordan see a way to completely see it. The way of playing is the same as those who don't know how to play. This will definitely make him such a professional player unable to eat or sleep for several days!

After arriving at the room, Ni Guangnan took out a copy of "95 International Computer Interface Protocol Encyclopedia" which was published within the Chinese Academy of Sciences in the first half of 1994.This book records the protocols and specifications of various mainframe and microcomputer interfaces in the world over the years.Slowly searched for a long time.When he had almost read all the interfaces of the microcomputer, he saw such a message at the end - "Universal Serial Bus, referred to as serial line. The English abbreviation usb is an external bus standard, used to regulate the connection between microcomputers and external The connection and communication of equipment. The interface supports the plug-and-play and hot-swappable functions of equipment. It was jointly proposed by Intel, Compaq... and many other companies on November 1994, 11. The latest protocol version is... Look at this Item. Compared with the photos and specifications inside, how does Ni Guangnan think Jia Hongjian’s draft looks like this so-called serial connection port, which is also the so-called usb connection port! However, Mr. Ni Guangnan did not feel that his wish was fulfilled and he could go to sleep. Instead, one question after another appeared in his mind——Why did Mr. Jia use this serial interface? What is it for? This communication The serial interface is followed by something like a small matchbox. What is it for? Is it some external device? But such a device is too small! What can it be used for? Or is it a storage device? Yes Hard disk? Or memory? The hard disk should be unlikely, but the memory is also unlikely. There is no way to make the memory so small!

Could it be?What other international new technology just released in 94?After entering Huaxia Hi-Tech, because Ni Guangnan has been working in the front line for a long time, it is relatively slow to replenish knowledge.Many times, it is a bit delayed to learn about the dynamics of the international front line. Now he really has no confidence to say that he knows the dynamics of the international electronics industry in 94 like the back of his hand!After spending two hours rummaging through various sources, he was surprised to find some clues in a collection of internal annual briefings of the Chinese Academy of Sciences-in 1994, a Canadian named SanDisk.The English name is ia-i type memory card for competing card storage devices.And the name of this small card is called ia, which is much smaller!

Such a CF card.The size seems to be about the same as the matchbox on the market. If so, maybe it can really be put into the little thing that Mr. Jia drew!The proportion of the little thing Mr. Jia drew seems to be that the CF card can’t fit in, but this may also be a problem with the proportion of Mr. Jia’s drawing... However, although I found out that there is a 4mb capacity thing called a CF card on the market , but what does Mr. Jia mean by combining this with the usb serial interface?

Could it be that this is to replace the floppy disk?Ni Guangnan, a great expert, could never have guessed that Jia Hongjian was making luxury things like mp3s. In Lao Ni's mind, he could now think of storage devices, and the most used storage devices these days are 3.5-inch floppy disk!Such a 3.5-inch, nearly 8-centimeter thin floppy disk has a capacity of only 1.44mb!Sometimes thinking is not enough!Mr. Jia, could it be that he wants to use this kind of CF card instead of a floppy disk?Looking at the international trend, the floppy disk should be replaced by an optical drive!

Moreover, although the transmission bandwidth and speed of this CF card itself are very fast, after adding the USB serial cable, the speed cannot be compared with the optical drive!In the current usb0.7 standard, the upper limit transmission bandwidth given is 150kbps, that is, 150kb of data per second, and such a data has already been realized on the single-speed optical drive in 1991!Now in the past 95 years, international manufacturers have begun to manufacture 4x speed optical drives, which means that the transmission rate is as high as 600kbps!Moreover, there is still a capacity of 600mb in a disc. In this way, the storage device designed by President Xiao Jia has a larger capacity than others, and the speed is not as fast as others?Such a product seems to have no other use except for portability!Such a product was actually designed by Mr. Jia who has always designed popular and best-selling products. Can it really be a best-seller?

At least for now, Ni Guangnan felt that he could not understand Mr. Jia more and more. Could it be that this thing is not what he imagined at all, it is not used as a storage device, but something else?It's not a CF card at all?I really can't figure it out!Okay, so even if you don't consider this strange thing, what is the next strange thing?Such a thing is actually square, it looks like it is about the same size as Huaxia Hi-Tech's repeater, and there seems to be an LCD screen on it, with a round control button on it?What is this……

etc!Is this the next repeater?yes!This looks like just the right size to fit in a tape... yes! cf card!If a 4MB CF card is put in this repeater, the repeating time that can be provided will be much longer, so that the xing performance will simply have an earth-shaking change!But if this CF card is to be imported, it should be quite expensive?Could it be that Mr. Jia Hongjian Xiao Jia wanted to make a repeater for the high-end market?How much does such a repeater cost?How could it cost thousands?hiss……

After all, Ni Guangnan is not a reborn person, and the more he thinks about it, the more outrageous he is!On the second day, Ni Guangnan, who had dark circles under his eyes, went to look for Jia Hongjian with great interest, which really surprised Jia Hongjian. "Master Ni, what's wrong with you?"

"I'm fine, Mr. Jia, let me ask you, are you thinking about designing a next-generation repeater?" Ni Guangnan asked with excited eyes. "No..." Jia Hongjian was confused by the second monk. "How could it not? Let me ask you, the sketch you drew yesterday and the one you threw away later, with a square shape on it, an LCD screen and a dial button, is it the next generation repeater? "Ni Guangnan put on an expression of "you don't fool me".

"Fangfang's? The one with an LCD screen and a dial button?" Hearing this, Jia Hongjian thought for a while, "Oh, let me go, isn't this an iPod?"How did it become a repeater?Jia Hongjian, who was dumbfounded at the time, explained, "Grandpa, that is not a repeater, but a music player, just like the Walkman in the past. I am designing the next generation Walkman!"

"Walkman? Impossible. Why do Walkmans need LCD screens? How fast is the price going up? Besides, other people's Walkmans are made flat and square. Why do you make them square? Is it necessary to use a CF card?" Ni Guangnan was a little confused at this time, he guessed the CF card used in this machine, and it was not Jia Hongjian who planned to use it himself, Jia Hongjian was going to remake the iPod for use hard disk……

etc!Jia Hongjian, who was about to explain, suddenly had an inspiration!Yes, the ipod uses a hard drive, but it is also a solid state drive!What is a solid state drive?There are two manufacturing modes of solid-state hard disks, one of which is more mainstream for individual consumers, that is, a large-capacity "flash memory card" made of a collection of flash memory card chips such as CF!So in theory, it is true to say that the "ipod" designed by Jia Hongjian uses a CF card, but it is just a plastic shell without a CF card, and the chips inside are integrated together, which greatly increases the performance. Increased capacity...

If there is a CF card these days, even if the capacity of the CF card is very small, but integrated, get more CF card chips as storage chips, it is no problem to get at least a 16m solid-state hard drive or a 32m solid-state hard drive?Isn't this equivalent to an early mp3 player?

Yes!When mp2000 players gradually appeared on the market after 3, they were far from being as big as a few gigabytes. At first, they were all 8m in size, and then there were 16m, 32m or even 64m, and then 128m. The ones that came out were already too big to listen to the songs that were put in!If so, is it actually feasible to make an ipod-style mp3 player in this era? rs