At the meeting, Zhang Bensong arranged for the staff to carefully scrutinize it from beginning to end, and made the plan so detailed that it could not be more detailed before letting everyone enter the clean room to practice.

In order to ensure that every step is correct, Zhang Bensong strictly monitors every step, especially in the key step of baking, which is prone to problems, Zhang Bensong even puts his hand directly into the oven to measure the temperature.

This frightened everyone else, although the photoresist is not resistant to high temperatures, but there are also high temperatures of seventy or eighty degrees Celsius in the oven, which can also cause burns.

But in the end, Zhang's adventure was worth it, and when he put his hand in the oven, he really got to the bottom of the problem.

"We need ventilation, dehumidification and cooling!"

Zhang Bensong said that the ventilation holes of their oven are not opened, so a large amount of water vapor accumulation makes it difficult for the photoresist to dry and set, and the water vapor will also cause the temperature inside the oven to rise abnormally, to solve this problem, the ventilation holes must be opened to ventilate at all times like when applying photoresist.

After ventilation treatment, the baking effect immediately rose a notch, and the most direct result was the silicon wafer that Zhang Bensong reached into the oven, and finally successfully etched out 20 chips.

Perhaps compared to the total number of more than 1,000 pieces of a silicon wafer, the number of 20 is really too little, and it sounds like luck made it.

However, only those who are really exposed to this kind of precision manufacturing understand that there is no luck in chip manufacturing, and now these twenty pieces are a breakthrough of 0.

Zheng Nan hurriedly came to the workshop when he heard the news, and when he heard that Zhang Bensong actually reached into the oven, he was even more anxious: "Director Zhang, you can say whatever you think, how can you do such a dangerous thing?" Did you know that you are the leader of chip manufacturing? ”

Zhang Bensong scratched his head embarrassedly and said that he didn't think so much at the time, and the temperature and humidity measurement, the perception of his hands is obviously more sensitive than any instrument, and Zhang Bensong also said that this is just a seventy or eighty degree oven, except for a little pain in the scalding, it will not cause other problems.

"I'm sure." Zhang Bensong said.

But Zheng Nan didn't care about this, he had to take Zhang Bensong to the hospital to deal with it, and the reason was also very good: "Director Zhang, you have the heavy responsibility of chip manufacturing, and your health is more important than anything else!" You don't want to be halfway through chip manufacturing, and you won't be able to continue working on your own, right? ”

Zhang Bensong was dragged to the hospital, and when he arrived at the hospital, the blisters on Zhang Bensong's hands rose, but fortunately he came in time, and the hospital only did emergency burn treatment, so there was no major problem.

It's just that after bandaging, Zhang Bensong can't actually make chips for a period of time.

Zhang Bensong whimpered at this, thinking that it would be good if he knew that he would not come to the hospital.

Zheng Nan disagreed, thinking that this was already the best result, and if it really broke down, it would be a lifetime thing.

Anyway, now that a qualified chip has been created, it proves that Zhang Bensong has found the key to the right problem, and the follow-up is just a familiar problem for other engineers.

In fact, another batch of 30 qualified chips was made that night, and even after testing, it was found that some chips were damaged by subsequent cutting, otherwise the yield rate could be higher this time.

Hearing this news, Zhang Bensong was so angry that he slapped the table, and he personally held a meeting with the cutting team, emphasizing the fragility of the chip, emphasizing that any slight crack conduction will cause damage to the chip, so chip cutting is also a very important step.

Then after a few days of running-in, Zhang Bensong and the entire Nanyuan Electronics Factory team finally handed over one hundred and fifty answers to Zheng Nan, although there is still a big gap compared with the more than 200 pieces made by Liu Gong himself, but it is already the normal yield rate of contact lithography.

……

When Zhang Bensong and his team were desperately tackling chip manufacturing in the workshop, Zheng Nan did not forget to run the guest house and always pay attention to the situation on the Lian Jun's side.

After all, it's not enough to just get the hardware, and the software is also a part that Zheng Nan attaches great importance to.

Now the accusations of the whole market against the radio factory's red and white machines are still in front of us, and some of them are accusing the radio factory of only selling machines and not cards, resulting in them buying back the machine and not being able to use it at all.

It's true that everyone hates the game, but you don't tell you in advance, and you don't send cards, which makes people quite annoyed, so now public opinion is together, and these people immediately joined the crusade against the radio factory.

The lessons of the past are in front of us, and Zheng Nan will certainly not make the same mistake again.

Zheng Nan was to distinguish himself from the game console of the radio factory, and in order to highlight his "learning machine" function, he deliberately approached Lian Jun and asked him to help modify some classic games and turn them into learning games that were entertaining and educational.

At that time, the red and white machine has all the functions of the learning machine, and the red and white machine does not have it, and they also give away the "learning game card", and the fool will know how to choose.

Lian Jun is a very smart person, although the first Little Bee game was too modest at the beginning, but after Zheng Nan's correction, Lian Jun immediately drew inferences from one another and made a style for the whole game, and even Lian Jun himself optimized the game process to a certain extent, so that Zheng Nan couldn't find fault with it.

With the success of Little Bee, the follow-up games are getting smoother and smoother, because of the original game, the manufacturing time is getting shorter and shorter, and after Zhang Bensong came up with the chip, the army has made fifteen games.

Zheng Nan had to stop Lian Jun for this reason, telling him not to develop new games, and to continue to optimize the fifteen games at hand first.

It's not that Zheng Nan is unwilling to give money, it's really that the memory card of this era has reached the limit.

Speaking of the little bee, these pixel games are not big, only a dozen kb, which is so small that it can not be smaller in the future, maybe a high-definition photo in your mobile phone, can be thousands of times the space of these games, but the problem is that the storage capacity of memory cards in this era is smaller.

If you go to the electronic street, you can find that the vast majority of game cards are basically three to five games, and the total capacity is about 256kb of storage capacity.

No matter how helplessly exclaimed, this is the upper limit of the capacity that can be achieved by the current domestic memory card technology.

Therefore, if Lian Jun is allowed to adapt the game so crazily, it will really not end well, and he doesn't plan to match two plug-in cards.

"I know Lian Jun, you are a very skilled person, but I think what we need to do now is to optimize and compress the volume of these games, so that they can fit into the 256kb memory card as much as possible."

Under Zheng Nan's reminder, Lian Jun suddenly realized, and he immediately apologized to Zheng Nan, saying that he only thought about making games and forgot about the size of the memory card.

Zheng Nan waved his hand and said that it was not too late to realize that it was not too late: "We can make precise calculations of these games and put them in as many memory cards as possible." ”

The idea was good, but when Lian Jun counted all the games, he found that the memory card of 256 could not fit at all.

"At least you have to ask for a 512 memory card, although the size of a game like Little Bee is very small, only 16k, but a game like Super Mario has 64k, which is easy to exceed."

Lian Jun said that if you want to play as many games as possible, the best way is to give up a large-volume game like Super Mario.

Zheng Nan directly rejected this idea: "Absolutely not, the size of the game of Little Bee is small, but the same fun is also small, and the game of Super Mario is large, but it is also very interesting." We can't just give up one side and the other, what we need to do now is to choose the best ratio possible. ”

Lian Jun's request for Zheng Nan felt like a big head.

Zheng Nan smiled and told him not to worry, it is better to optimize these games first and see if there is any way to reduce the volume as much as possible.

In fact, for Zheng Nan, his idea at this time was that it would be enough to cram eleven or twelve games, and giving up one or two big games and using more small games would also give people a feeling of "rich games".

But the next day, Lian Jun brought Zheng Nan a surprise, he told Zheng Nan that he had thought of a way to put all the fifteen games into the 256 memory card.

"It's just writing code!"

Lian Jun told Zheng Nan that he had researched the games and found that many of the textures of these games were identical: "In that case, why don't we let these games build a library together, and then use code to connect these libraries, which can greatly reduce the space." ”

Zheng Nan can probably understand what Lian Jun meant, that is, originally these games each had a material library, and now Lian Jun wants to open up these material libraries together, which can greatly save space.

After all, the size of the game basically depends on the number of these materials, such as why Super Mario is big, because he has many texture scenes; On the contrary, the little bee turns over and over in those scenes, so it is very small.

Compared to the proportion of these materials, the space occupied by the code can be more negligible.

"That sounds like a good idea, but if you put all the materials together, will there be a problem with the wrong access?" Zheng Nan asked.

Lian Jun recognized Zheng Nan's question, and he replied: "I can make a series of codes to circumvent these problems, such as classifying these materials, although they are all placed in the same warehouse, as long as we number him, so that it is not so easy to make mistakes when accessing." ”

"How sure are you?" Zheng Nan asked directly.

"Ninety percent...... At least eighty percent or more! Lian Jun replied.

Good!

Zheng Nan immediately said: "Since you are sure of this, classmate Lian Jun, please give it a try first, if you can do it, I will give you an extra bonus; But at the same time we also have to preserve the possibility of a single game. ”

Lian Jun stood up and firmly assured Zheng Nan that he would do it no matter what!