He Jie was in charge of the office, Zhang Heng was very relieved, and after lunch, he took Chen Zhenning to Yaliao Street in Sham Shui Po.

He was going to buy some electronic components first, and try to see if he could turn the arcade board upside down.

At the beginning of this century, a large-scale land reclamation project was carried out in the Sham Shui Po area, and many new streets were added, and the section sandwiched between Nam Cheong Street and Yen Chau Street was where the Tan people surrounded and raised ducks, so it was named Yaliao Street.

In the 50s, as the entire Sham Shui Po area became a second-hand trading market for electronic hardware, Apliu Street gradually became a monopoly market for second-hand home appliances and mechanical toys.

In the 70s, with the development of Xiangjiang and the global electronics industry, the goods here became more and more abundant, the business became more and more prosperous, and there were naturally more and more customers, and there were even merchants from Wanwan, South Korea, RB, Singapore and India who came to receive and sell goods.

Today is not a holiday, but Apliu Street is still crowded, with customers carrying various small bags rubbing shoulders and constantly stopping at various stalls or entering and exiting from various shops.

On the street are street stalls, selling some second-hand goods, and behind the stalls are regular shops, some selling second-hand goods, and many selling first-hand new goods.

At a stall selling used books, Zhang Heng squatted down and reached out to pick up an all-English copy of "Electronic Design", leaving a hand next to him that was a little late.

The owner of the hand was a young man, and he looked at him suspiciously: "Little brother, can you read this magazine?"

Zhang Heng nodded, the other party left stupidly, and looked back halfway, seeing that Zhang Heng had already looked down at the magazine, shook his head and went into a certain store.

Founded in 1942, ED is the most popular and authoritative magazine in the American electronics industry.

Compared with other highly professional academic magazines, it focuses on reporting new technologies, new thinking, new products and new applications in the electronics industry, so it is more suitable for product development engineers, market-oriented designers, electronics manufacturers and technicians, as well as the majority of electronic enthusiasts to subscribe.

The cover of this monthly magazine, published in January 1972, is a photograph of a yellow arcade machine, and it is it that attracts Zhang Heng to stop.

He recognized it at a glance as the first arcade machine ever made, Computer Space.

The CS was produced by Nutting Members and designed by Nolan Bushnell, the future founder of Atari.

No, today is December 19th, and he should have founded Atari a long time ago.

The title of this cover article is: "Defeat! A Game Mechanical Adventure for the Ordinary Population." 】

1,500 CS arcade machines designed with TTL circuit structure failed miserably because of their extremely unfriendly cumbersome operation and the picture that defied the common sense of physics of the general population, and bars and billiard rooms across the western United States returned one after another.

The article criticized these shortcomings of CS, and did not hesitate to praise the design idea of the game console in the best words, that is, the use of advanced circuit structure and display equipment to replace the original mechanical game console.

Finally, the article points out that the circuit structure, especially the commercial integrated circuits that have begun to sprout, will be the future development direction of game consoles.

After reading this article roughly, Zhang Heng remembered the name of the author of the article, this reporter named Michael Donald, who has a very good vision.

Zhang Heng bought this magazine for 10 Hong Kong dollars, and asked the boss if there were any other related magazines and books by the way.

The boss shook his head, but told him that he could go to the Chinese University Library, which might be more complete.

Hong Kong Chinese University opened the Department of Electronic Engineering in 70 years, and I think there should be some professional books.

Zhang Heng thanked his boss and bought an old "Oxford English Dictionary", his English is indeed good, but he also has to pretend, so that others can see that he is usually studying hard, and it is not a long-term solution to always rely on miracles.

Leaving the stall, Zhang Heng continued to walk forward, and soon saw a signboard of "Zhefeng Component Store", which sold the latest electronic components, integrated circuit modules and circuit boards.

This shop should have the components it needs, Zhang Heng walked into this small shop, and saw two people across the counter, their heads on the glass cabinet, pointing at a drawing, and the discussion was very intense.

He leaned over and saw what appeared to be an amplifier circuit, with a single supply and triode design, and the two were discussing how to increase the amplifier gain.

"This is an antenna?" Zhang Heng interjected.

"Yes. The two of them raised their heads in unison, and then they were taken aback at the same time, one of them was the young man he had just met at the bookshelf, and he asked elegantly, "Little brother, can you also understand this circuit diagram?"

"I don't know too much. Zhang Heng said modestly, when he was in college, this kind of circuit diagram was repeated over and over again, but after entering the society, he quickly changed careers and made real estate, not to mention this kind of circuit diagram involving transistors, let him look at an ordinary ohmic circuit has to consider it for a while to understand.

The young man seemed to think that this was normal, nodded and lowered his head to continue studying the circuit, but the person at the counter looked at Zhang Heng curiously.

Zhang Heng smiled and asked, "Boss, do you have an Intel 4004 here?"

"You're talking about the one Intel just released last year?" the boss narrowed.

"Yes. ”

"There is exactly one piece, 780 Hong Kong dollars. After quoting the price, the boss paid attention to Zhang Heng's face.

Zhang Heng was very calm, the ex-factory price of this chip was 130 US dollars, according to the exchange rate of 5.65, this boss should not have made much, it was a conscience price, he asked casually: "Yes, is it a brand new product?"

"No, it's an unsealed piece, but I promise it hasn't been used. "The owner took out a small plastic box from under the counter.

Zhang Heng took it and opened it, there was an ordinary black ceramic packaging chip inside, and the black panel was sprayed with the word 4004 in white, he asked the boss for thin cotton gloves, pinched the chip and carefully observed the pins.

Maybe for some reason, this chip was unpacked, but it was not soldered to the circuit board, and it can indeed be said that it was not used, at most it was tested.

"Is there a problem inside?" Zhang Heng confirmed.

"No problem, if there is, you get it back immediately, and I will give you a full refund!" the boss patted his chest and promised.

"Okay, I want this piece, do you have a parameter table and an assembly instruction set?" Zhang Heng nodded, this kind of chip will not be damaged easily unless there is a strong current input.

The boss turned out two drawings, the original version, but a copy, Zhang Heng looked at it, it was indeed the relevant technical documents of 4004.

"Do you need compilers, burners, or other things?" the boss added.

is a business talent, Zhang Heng secretly praised.

This is not like the era of personal computers more than ten years later, you can directly program and debug and even write chips on the computer, at this time, the programming and writing of chips require special equipment, in addition to compilers and burners, but also need testers, connection adapters and other large amounts of equipment.

As soon as he said the request, the boss got busy with a smile, and quickly packed a large cardboard box over, "Promise 3,800 Hong Kong dollars." ”

The young man who was immersed in studying the circuit diagram looked up and glanced at Zhang Heng deeply, and immediately lowered his head and continued to study.

Zhang Heng paid the money and asked Chen Zhenning to hold the cardboard box, and the boss handed over a business card, "Contemptible Zhang Zhefeng, I am the owner of this store, please give me more advice." ”

Zhang Heng smiled and took the business card, who could spend 3,800 Hong Kong dollars to buy a bunch of electronic equipment this year, either a factory supervisor or an enthusiast, which is a rare big customer for such a store, so naturally he must try to seize it.

Before leaving, he looked at the young man who was focused and the circuit diagram he was writing and calculating, and whispered, "Power may be the key." ”

PS: Thank you friend [not in a bad mood***] 100 tips, anyway, I can't see the full name, is it originally like this or is it blocked?

["Zhang Zhefeng" provides a set for the book friend "Carved Boat Son"]

Under the report, last week's recommended votes were 1700+, 1000 had been added last week, and more than 700 were put into this week's combined calculation, and this week at least three chapters should be added on the basis of two more per day: the book list is more than 5 +1, the comments are more than 50 +1, and the recommended votes have 700 bases, and they will definitely be able to exceed 1000, +1.

I hope friends continue to vote more this week, and strive for at least 1300, then this week will be +4 chapters.