Rebirth: I carry a desktop computer inside me

Professor Luo Ruihua is not the same as Yang Mingde.

Yang Mingde is often smiling and amiable to people.

But Luo Ruihua is different, his face is not very smiling, although the tone of speech is not heavy, but every sentence has a sense of strength, which makes people can't help but believe him.

On the second day, when Jiang Cheng studied with him, this feeling was obvious.

“...... You have 2 weeks to study "Andrew Ng's Machine Learning Open Course" and "Deep Learning and Computer Vision", if you have any questions, email me, of course, it is recommended that you find the answer yourself, I will take you, more not to teach you the answer, but to guide you how to find the answer. "

The first time I followed the teacher, I lost two classes and let myself see it.

Although Jiang Cheng felt a little unaccustomed, after all, he was often self-studying, and he didn't feel anything.

"Okay, I made a note, teacher."

"I'm usually busy, I'm not necessarily in the department, if there is no emergency, you don't have to look for me." On the 11th of next month, I will test your mastery of these two courses, of course, by that time, you must also determine a research direction or goal, and if feasible, I will guide you to apply for a project.

Luo Ruihua reminded again, which allowed Jiang Cheng to go back.

On the way back, Jiang Cheng sighed a little.

From today on, at least in the field of deep learning, he will no longer be a student who learns knowledge from his teacher, but a pioneer who follows his mentor to explore knowledge.

He must find a good direction, determine a good plan, and learn the cutting-edge knowledge more deeply and thoroughly.

Professor Luo Ruihua reminded him to learn the 2 courses, Jiang Cheng has basically read them once.

But, just looked, plus basic understanding.

These two courses are the basic content of machine learning and deep learning, and they involve the first footprints that initially stood on the shoulders of giants.

With a trace of awe, Jiang Cheng found these two course courseware and books from his body and read them carefully.

It is no longer to seek basic understanding, but to pursue the root cause and master the principles of machine learning more deeply.

Especially in the field of machine learning, although Jiang Cheng read the book, he still uses existing knowledge and algorithms, and uses post-artificial tools to build programs.

However, he is not familiar with the algorithmic principles, reasoning processes, and mathematical arguments.

Go for it, boy, and go for the truth of computer language!

......

At the beginning of November, Jiang Cheng had already read the open course and deep learning three times.

Jiang Cheng also studied some of the extended books involved in it by himself, and obviously felt that his research on machine learning had improved.

During this period, Jiang Cheng took the time to recruit an assistant for Maple Fire Semiconductor Company.

Male assistant, Guo Xiaomin.

Mainly responsible for contacting factory construction, chip tape-out and other things.

Battery fast charging chips, do not need as fine work as CPU, micron-level process is enough.

After spending less than 300,000 yuan, Jiang Cheng obtained more than 100 packaged fast-charging chiplets through Huaxin microelectronic tape-outs.

It also happened that the 2 technicians sent by Yu Shengdong arrived.

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led by a technical backbone named Lian Cheng.

Dressed in casual clothes, T-shirt and jacket, not tall, but thick hair.

As soon as he arrived in Kyoto, he held his hand, "Is it so cold?" "

I made a mistake, I thought that I would just bring a coat, where did I know that the cold in the northern city and the cold I felt in Peng City are not the same thing at all....

Xiao Li, the attendant, took out a thick coat from the suitcase very calmly, and as soon as he put it on, the blood on his face seemed to warm up.

In Kyoto in the early morning, it is only 5 or 6 degrees.

Wrapped the short thin coat slightly, connected it into a light cough, and drove towards Mizuki.

"Xiao Li, the Department of Computer Science of Mizuki University is one of the best in China, where did you study in the first place?"

"Huazhong University of Technology, Optoelectronics."

"Well, that's great." Lian Cheng praised, "The person we are going to meet today should be a student of the Mizuki Microelectronics Department, and I heard Yu Dong say that it is very good."

"Gee, Mizuki! It is worthy of being one of the highest universities in China, and many students here are researching and developing many cutting-edge technologies and products, and in some fields, even our enterprises cannot compete with it!

Lian Cheng said it was chatting, but he was still talking to himself.

Xiao Li is very shy, just listens, does not speak.

Warwick's current consumer business is still in the rising stage.

In particular, the mobile phone is still only competing in the low-end product line.

In order to survive, a lot of contract machine series were engaged in with mobile operators.

At present, most of the Ascend models on the market are available, and the processor is still Texas Instruments, and the performance is very weak.

But Lian Cheng knows that the Mate series that the company is currently developing will be the first step to the high-end.

What's more, this phone will be equipped with their secret weapon, the newly debugged K2V3.

Lian Cheng's mood was agitated until he arrived at the Institute of Microelectronics of Mizuki University.

"Hello Liangong!"

"You're Jiang Cheng, right?" Lian Cheng stretched out his hand and shook hands with a handsome young man who greeted him.

"Originally, I wanted to invite you to sit in the company, but now that the venue has just been implemented, I can only meet directly here." Jiang Cheng said apologetically.

Lian Cheng waved his hand, "It doesn't matter, I'm also an acute child, let's look at the product directly."

"Yes, please." Jiang Cheng stretched out his hand and asked for help.

In order to actually test these freshly baked chips, Jiang Cheng contacted the boss of the Institute of Microelectronics through Ding Chengjun, spent some money, and borrowed some instruments and equipment.

Well, in other words, this Ding Chengjun is good.

After Jiang Cheng sent an email asking questions, he obviously felt that the other party would not be cold to him.

Some words have also become exchanges and discussions.

But Jiang Cheng knew in his heart that he only had unlimited circuit design experience in the internal computer, and there were still many shortcomings in theory, especially cutting-edge knowledge.

Maintaining a humble and cautious style at all times is the right way.

The three entered the Institute of Microelectronics.

On the test bench in a laboratory, there are more than a dozen fast-charging chips.

However, the size of a child's nail block is very thin, with three pins on each side.

Next to it are experimental variable voltage power adapters, as well as more than a dozen lithium batteries for mobile phones.

"Classmate Jiang, have you tested it yourself?" Lian Cheng looked at it, didn't start first, and asked directly.

"Several sets of comparative tests have been carried out, and the performance is very stable on 9V/2A, 5V/4.5A, and the lithium battery of 3000 mAh can be charged to 90% in about half an hour." Jiang Cheng introduced.

"Shhh!" Lian Cheng was a little surprised, "So fast!"

"This is still for the subsequent protection of battery safety, the remaining 10% will intelligently regulate voltage, current, can also be fully charged within 10 minutes, in order to prevent overcharge, after full charge, will automatically disconnect the charge."

"Just say no, I'll have to test it myself."

"Please." Jiang Cheng looked confident.

In order to develop this fast charging chip, Jiang Cheng has deeply studied the associated power adapter, fast charging protocol, and data cable related knowledge.

The whole link will be flawless.

Lian Cheng took Xiao Li to start his own test.

Then, as soon as a result is measured, even the achievement is a burst of "Shhh! "Voice, amazed.

Half an hour later, Lian Cheng looked at the simple charging line and test results on the table, and already believed in the energy of this product.

But then, Lian Cheng discovered a problem.

"Huh?! Your charging interface, not micro-USB?

Jiang Cheng shook his head, "Of course not, the micro-USB maximum current can only support 2A, it is too low, I designed the fast charging chip, in order to make the battery achieve the fast charging effect, the interface was newly defined." The

interface cannot be defined by itself. It is a unified standard developed by the United States USB-IF and must be complied with by all international companies.

Jiang Cheng smiled, "Standard? Who said that what they want them to set is the standard?

"This..."