The computer of this era, except for the PC, mostly there is no hard disk. At most, there is a software disk. The operating system is stored on only read memory, that is, on ROM.

Li Sanbiao found that although the domestic dynamic processor is also the memory, the study of the Shanghai Electronics Factory is OK, the energy produced 8K memory, the manufacturing 32K memory, it is enough to be commercial.

However, static processors are still in their infancy in China.

The ROM on the computer is generally available to removing memory EPROM, not the first generation of fuse.

ROM is called reading only memory, which can only read out and cannot write the information casually. Usually, a basic input and output system is solidified in the ROM of the computer motherboard, which is BIOS.

For computers, the main role is to complete the power supply self -inspection of the system. The initialization of each functional module in the system, the driver of the basic input and output of the system and the boot hard disk operating system start.

Early DOS systems were very small, Apple DOS can be installed with a ROM, so there is no hard disk.

The game content of the Nintendo game card is actually a welding ROM. The function of the game card itself is to connect the ROM and the slot.

Of course, strictly speaking, flash memory and discs are ROM, and even flash memory can be repeatedly erased, but generally ROM refers to the firmware that cannot be erased.

The computer's EPROM, use the floating grid MOS circuit to save information, the rewriting of the information can be erased with ultraviolet rays.

In fact, the principle is similar to the fuse fusion mechanism,

The crystal tube in the ordinary memory chip has a data for 1 and 0 data is 0, but the status cannot be recorded after power off.

And the transistor in the ROM can still record the data status when power -on.

However, it must use a specific high -voltage tool to write data.

During the manufacturing of chips such as ROM, a structure similar to fuse -like structures will be set in the transistor,

During the record, the recording opportunity can connect a high voltage to reach a strong current, fuse fuse, the fuse is always 0, and the non -melting will always be 1.

When reading, the computer motherboard only uses a low voltage, so the current is very small, so the remaining fuse will not be destroyed without affecting the state.

Of course, the current grille EPROM is more advanced, but the principle is similar, that is, the high voltage of the burning recorder can make some grille open, and it will not be actively closed after opening, and the other part of the grille is still closed.
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When ordinary users read, his computer motherboard only provides low voltage, and will not change any grille opening and closing state.

This is the control of force. It is like an adult's laborious to open a door. You don't have to worry about whether the child can open or close it, because he is not strong enough.

The electronic technology information stored in the three uncle is very rich, and the manufacturing methods such as ROM basically have.

But only the structure of ROM is complicated, not reflecting on the line diagram.

Although the process is sufficient, the grid switch of the ROM chip has a special etching method, and new raw materials must be added. This is completely different from the calculation chip.

Need to upgrade the carved machine.

This is not an hour or two.

Li Sanbiao temporarily closed the factory and took all several engineers on vacations to let quantum robots

Non -stop day and night.

Among them, the parts need to be replaced, adding robotic arm, transmission system and injection system,

Fortunately, Li Sanbiao has a complete machine repair workshop. It uses the old machine tool in the 1960s, relying on the superb processing process of the eight -level work of quantum, and achieved the design standard of the robotic arm.

Don't look down on workers. It is said that there are eight -level workers. The skin can perceive the distance of 1 microns. The perception of your own skin can reach the level of the spiral microcarling, which is very magical!

The current chip process is a few micron levels, so the eighth level can still complete the production line processing.

After three days and three nights, this production line can be produced by both ordinary chips and the production line of storage chips!

Li Sanbiao immediately carried out a 128K ROM, which can be called the high -end standard of this era!

In 1985, most Nintendo's game cards were 16K and mostly. The complicated games such as Soul Dou Luo were only 32K!

When I designed Wenqu Xing last time, Li Sanbiao has made a little bit of the Chinese Character. Now just corresponds to the corresponding five strokes input method and code input method.

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Then Li Sanbiao wrote a WPS Chinese system and translation software, and was also recorded in ROM.

The next step is to connect the floppy drive to light up the computer, and the Chinese interface of Beidou DOS appears!

Of course, this DOS system cannot be graphics, and it is still an command line form.

However, its running is very stable. When loading the WPS software written by Li Sanbiao, there is no need for complex operations such as additional memory adjustment.

The WPS software written by Li Sanbiao also comes with the Wang Code Wubi and the decoding function. You can automatically convert the Chinese characters entered with Wubi into a telegram code.

Li Sanbiao made great achievements and brought this machine back to the telegram building.

The post and telecommunications director was shocked by this computer,

In Li Sanbiao’s hands, the DOS of this computer, and text software can enter Chinese!

"Are you using the five strokes input method you said?"

Li Sanbiao nodded: "Yes, as long as you learn with your heart, you can learn and remember it for a week. I can give a training class for the decoder to let them master it as soon as possible."

The director of the post and telecommunications looked at this complicated king code five pens keyboard, and I don’t believe it can be used.

After all, it can only cultivate an electronic staff who keeps in mind the 3000 -character code!

Li Sanbiao sat next to the computer and asked the director to ask him to take the test.

The director brought a newspaper and read a briefing of today's news: "my country successfully launched a set of space physical test satellites. This is the first time in my country to launch three satellites with a carrier rocket."

Just after reading it, the director suddenly found that Li Sanbiao had knocked on these Chinese characters on the keyboard, and then there was a corresponding code!

The director was shocked for a while, really as fast as you read!

"Once again! After the implementation of packaging to the household in Linxi County, Hebei, the agricultural technology promotion station sells seeds, pesticides, and many farmers come to consult agricultural technical issues."

This time the director deliberately thought faster, but the result was still the same!

Li Sanbiao kept clicking on his fingers to dizzy the director's look. I did not expect that the speed of Chinese typing can be so fast!

Of course, the director still reads at the speed of the normal electrical text. After all, the newspaper is generally cherished like gold, and the speed of reading the text will not be too fast.

"Honestly, how many years have you practiced?"

Li Sanbiao said that he didn't see it with his own eyes, he didn't believe it,

"Didn't you tell you, you can learn in a week, don't believe you let your daughter try it yourself!"
Chapter completed!