Chapter 1 Modifying Remote Control Color TVs

On the morning of February 10, 1979, the rolling door of the Xingwang Electric Appliance Company in Apliu Street, Sham Shui, Hong Kong, slowly rose in a piercing sound of mechanical friction, and then out of the door came a young man with pale skin, wearing a casual jacket, trousers, and slippers, with long cheek-length hair shining dark in the rising sun. Pen? Interesting? Pavilion wWw. biquge。 info

"Ye family boy, what are you going to do this morning?" Chamber, who was at the door, was dealing with the guests coming and going, and at the same time he was busy asking the young man standing at the door stretching.

Qian Bo is a 'Hong Kong escapee' who came to the sea, he has been setting up a stall at the door of Ye's house for several years, and has never been charged a booth fee by the Ye family, in return, the Ye family's early Qian Bo has been covered, with the death of the Ye family's daughter, Boss Ye, who is single and raising the child alone, is too lazy to cook by himself, and after symbolically paying some money, three meals a day are solved in Qian Bo's stall.

Some time ago, Boss Ye died, and his only son, Ye Kai, who is said to be studying in Germany, had to interrupt his studies and return to Hong Kong to take over Boss Ye's business.

Ye Kai stretched comfortably, and the good-looking Danfeng eyes almost narrowed into a slit under the sunlight, through this gap, Ye Kai glanced at Qian Bodao, who was busy: "Old rule, let's have a fried pho." ”

"Okay" Qian Bo replied without looking back, that breath was full of joy, I don't know when it started, every time he saw the sunny and handsome Ye Kai, his mood was extremely happy, maybe Qian Bo, who was born kind, had not yet discovered from his subconscious that his snack stall had a deep relationship with Ye Kai's shop, as long as this shop existed for a day, his stall would exist safely for a day.

Don't forget that in this small land with a sound legal system, where the sun also can't shine, the ubiquitous underworld is a dark cloud that can never be dispersed over the heads of all small industry owners.

However, in Yaliao Street, or even around Ye Kai's shop, there will be no such cloud, without it, only hard fists!

The ancestors of the Ye family moved to Hong Kong before the liberation, and the Wing Chun master Ip Man who moved to Hong Kong at that time is different, the ancestors of the Ye family belong to the Xingyi Quan faction, although they have the same surname, but the faction of martial arts is destined to make them not have any involvement.

Later, after the Hong Kong Governor's Office reclaimed the sea in deep water, the ancestors of the Ye family bought this piece of land that was later known as Apliu Street, built a duck shed, and raised ducks. And the surrounding villagers are in this place full of duck sheds, spontaneously carrying out the so-called second-hand electrical appliances, which are actually dilapidated at home, including electrical appliances, all goods trade, in order to earn a dime and a half to supplement the family.

Later, Sham Shui Po was included in the urban planning, and it was necessary to build a street in the middle of the land bought by the Ye Kai family, so in order to subsidize the Ye family, the government built a slip of buildings for the Ye family on both sides of the street, the ground floor was rented out as a façade, and the rooms on the upper floor became rental houses, hence the name of Apliu Street.

The house they live in is a 6-storey building, except for the first floor as a façade and the second floor as a place to stay, the rest have been built into warehouses and started to do second-hand electrical appliances and electronic components business.

After the business passed into the hands of Ye Kai's father, Ye Kai's father added a new business, that is, selling new electrical appliances and starting maintenance business, which is also the reason why Ye Kai's father will send Ye Kai, who is talented in reading, to Germany to learn electronic technology.

Ye Kai, who practiced Xingyi boxing under his grandfather's stick since he was a child, was 8 years old when he was able to work with his father in the face of gangsters on the street without falling behind.

It can be said that today's Yaliao Street is so calm and prosperous, and the relationship with Ye Kai's family is inseparable.

At this time, Ye Kai ate his breakfast unhurriedly, and then got up and opened all the doors of the store, while cleaning the dust on the shelves with a feather duster, while looking at the various electrical and electronic components neatly placed on the shelves with satisfaction.

"Ye Kai, receive the goods!" A postman dressed in a grass-green costume rode a bicycle with a rack full of goods, and came to the door of Ye Kai's store and shouted loudly.

"Here we are." Ye Kai threw the feather duster aside, hurriedly rushed out, took the package in the postman's hand, signed it smoothly, thanked him, and returned to the store.

When Ye Kai saw the address on the package, he knew that it contained some instruments and accessories he needed to modify the remote control color TV he ordered from Fusang a few days ago.

Speaking of this remote control color TV modification,Ye Kai remembers very clearly,In the previous life90After the mid-to-late years,It was very popular to install remote control on manually tuned color TVs on the market,Because cable TV had just begun to be promoted at that time。 And before, because most of them were by receiving wireless signals to watch programs、And the channel is quite few,So many of the previous color TVs did not have remote control,And the origin of these color TVs is very complicated,The oldest can be traced back to the fixed picture tube The casing is made of wood,However,Some of these color TVs are second-hand,Some are newly bought and are still in use today,At that time, the domestic manufacturers who introduced the outdated color TV production line of Fusang State,The color TV with remote control produced,The cheapest price21Inch color TV is more than 2,000。

This greatly stimulates families who are not wealthy, by installing a circuit board with a microprocessor, to achieve remote control of the TV to change the channel, adjust the volume and remote control on and off, after all, most of the Chinese families are used to lying in the quilt to watch TV, tired of watching with the remote control turned off to sleep, how convenient!

At that time, the cost of installing a circuit board was reduced from the initial 500 yuan to about 80 yuan at the end, which shows how profitable it is!

It is for this reason that after Ye Kai came to this world, after taking over his father's industry, he found that the price difference between a color TV with remote control and a color TV without remote control reached more than 1000 Hong Kong dollars, and the cost of making a circuit board like this, Ye Kai heard about the latest invention of the infrared remote control kit, the cost is only about 100 Hong Kong dollars, of which the cost of the CPU has reached about half.

One of the difficulties is the defect of remote control technology at that time, and the second is the programming of CPU, because such technology is an emerging technology, although this technology was first born in the 5 and 60s, but the mature technology applied to the TV is still in the early 80s after the invention of infrared remote control technology, and this technology was first applied to the TV by the Japanese electrical company, for such a technology, the manufacturer must be very confidential.

The CPU on the TV is completely different from the computer, mobile phone, and even the CPU on the smart device, from the classification, it belongs to the category of microcontroller, and it belongs to the simplest microcontroller, it only needs to receive signals, and then process accordingly according to the internal program of the CPU, and there is no need to send data signals or communicate with the outside at all.

However, it was such a simple technology, and the domestic enterprises at that time could not crack and imitate it, so they could only introduce the technology and production lines that had been eliminated in Japan at that time, but in the publicity, they fooled the public that it was independent research and development.

Of course, as a company starting from scratch, it is an indispensable stage to continuously add your own ideas and technologies on the basis of the technology we have introduced.

Therefore,Ye Kai is also learning from this idea,Prepare to change the manually tuned color TVs in his store to remote control,Increase sales at the same time,It is also necessary to open up sales for this product,It is best to package and sell this technology---- this is Ye Kai's original intention。

Ye Kai returned to the back of the workbench connected to the cashier, turned on the laptop computer on the workbench--- Osborn1.

This computer was given by the seller when Ye Kai's father purchased Z80 chips in large quantities.

It was the world's first commercially successful laptop, weighing 23.5 pounds and costing $1,795. It is equipped with a Z80 CPU from Zilog, 65KB of RAM, two 5.25-inch floppy drives, a clamshell keyboard (as with today's laptops), and a large 5-inch display. In addition, it was the first computer to come with its own commercial software. Included software includes WordStar (similar to Word), SuperCalc (similar to Excel), BASIC (programming language), etc., with a total value of more than $2,000.

The only use that Ye Kai found for this computer is that with it, it is very convenient to write a program that he has written, through a reader, and quickly burn it into the CPU, and for the rest, Ye Kai has not found a more meaningful use for the time being.

Ye Kai according to the technical manual of the CPU,Quickly use the keyboard to input a section of the program into the computer,The program is very short,Only about 1KB,With it,After the CPU starts,It will follow the instructions issued by the remote control,Chip pins that define the function through the program,It will output voltage signals representing the volume size、Number of channels,Voltage signals such as the number of channels。

After burning the CPU, Ye Kai carefully inserted the CPU into the reserved jack of the circuit board full of resistors and transistors, carefully fixed the chip pins with copper foil with solder, and then wrote the program of the infrared signal emitting chip in the computer.

Ye Kai began to make the remote control in his free time when the computer burned chips through the reader.

The remote control is very simple, just a chip and buttons that transmit signals, and it is OK in a plastic box. After the chip is burned, the function of each pin and the function represented by the button are defined, and when in use, the function represented by the key will be sent to the CPU in the form of encoding for decoding processing.