On a sunny day, the sun fills every office of the Chongguang Lake Research Institute, and the potted flowers placed in the building have also been replaced with the seasonal moon season, Hu Yiting is designing quickly in front of the computer in his spacious office, and the pot by the window is blooming delicately, and the petals are red and transparent in the golden sunlight.

Hu Yiting is designing his own single-chip microcomputer system at hand.

The so-called single-chip microcomputer, to put it bluntly, is the simplest computer, also called a microcontroller, the reason why it is a "micro" controller, is because its computing power is weak, compared with the PC or mainframe computer is too far, and those equipped with powerful CPU computers, it has no complex structure in design, and there is no complex instruction set, so it generally cannot run a very complex and bulky operating system like indos.

However, the single-chip microcomputer is an out-and-out computer, and a small chip integrates the CPU, memory, internal bus system and external bus system, which means that the main components of a computer are all integrated into a chip. Of course, in terms of performance, its CPU, memory, internal bus and external bus are all far worse than the corresponding parts on a home PC.

But we must know that too many products in life need computing power, and we cannot install a home computer in the refrigerator in order to control a refrigerator, which is a waste, so all electronic and mechanical products that need computer applications in life are all single-chip microcomputers. All kinds of toys, all kinds of household appliances, handheld computers, USB flash drives, mice, PDA electronic dictionaries, telephones, mathematical calculators for students, mobile phones, keyboards, power tools, ...... And so on, it can be said that modern people actually live in the ocean of single-chip microcomputers, and every household can find a dozen or even dozens or hundreds of single-chip microcomputers.

Therefore, relying on the volume, this small "computer" with ordinary computing power, or microcontroller, has an incomparably wide range of market applications. Because this thing is cheap, it is used in an astonishing amount of industry, and hundreds of millions of single-chip microcomputers are consumed every year in the world, from the worst performance of a few cents a piece, to dozens or even hundreds of dollars a piece with excellent performance.

But this is only the price of a single-chip microcomputer chip, and the motherboard equipped with a single-chip microcomputer chip has a higher added value, that is, a single-chip microcomputer system.

On a palm-sized PCB circuit board, after installing a single-chip microcomputer chip, plus an external memory for expansion, some capacitive components used to ensure the stable operation of the system, and even LED display, or USB and other interfaces, in short, such a combination of boards can be ever-changing, with various uses, which can adapt to a variety of products that require computer control, and provide a steady stream of innovation possibilities for industrial products.

Domestically, there are still single-chip microcomputer products that have not been able to get their hands on in 96 years, and the general users use the mainstream Intel 51 single-chip microcomputer, or choose products designed by Motorola and Texas Instruments.

The lack of its own single-chip microcomputer system is extremely disadvantageous for China in computer teaching and research and development, because the single-chip microcomputer system is the core essence of industrial automation.

It can be said that all college and university computer students in the admission, the first contact is the single-chip system, which is the basis of computer entry, but since the foundation is developed by foreigners, the chip is imported, Chinese students and teachers in the mastery of the difficulty, the cost of experiments and teaching is also very high, so Hu Yiting felt that the development of China's own single-chip microcomputer system is imperative, in 2001 after the obsolescence of the Intel 51 single-chip microcomputer patent, many domestic design and production of 51 series of single-chip companies and individuals, the emergence of several powerful design enterprises, the wholesale price of single-chip microcomputer is finally cheaper to the price of cabbage, but Hu Yiting didn't want to wait until six years later.

Another reason why he decided to immediately start developing a domestic single-chip microcomputer system is that the 51 single-chip microcomputer is a product of the eighties, and it is already somewhat outdated in terms of performance.

A-V-R MCU is a high-speed 8-bit MCU product developed by ATMEL company in 1997, its advantage is that it has built-in rewritable Flash, and uses RISC reduced instruction set, fast speed and cheap price, it has been very popular since its launch, and its sales have skyrocketed every year, reaching more than one billion pieces in 15 years.

The reason why the AVR series microcontroller sells well is because of its excellent performance.

In the early days, the single-chip microcomputer mainly due to the low level of technology and design, high power consumption and poor anti-interference performance, etc., a stable scheme was adopted, that is, a high frequency division coefficient was used to divide the clock frequency, which made the instruction cycle long and the execution speed slow.

Although the CMOS single-chip microcomputer in the future adopts measures such as increasing the clock frequency and reducing the frequency division coefficient, this state has not been completely changed, 51 single-chip microcomputer and 51 compatible series products do not have high performance, these products are used in household appliances no problem, in industrial applications, such as robots, CNC machine tools will be poor, although there are some other brands of RISC reduced instruction set single-chip microcomputer came out during this period, but still follow the previous practice of various single-chip microcomputers to clock frequency division.

Later, two engineers from the Norwegian Design Center of ATMEL Company thought of abolishing the machine cycle, abandoning the CISC complex instruction computer and pursuing the practice of instruction completeness, and designed the simplest and fastest RISC reduced instruction set microcontroller, that is, AVR microcontroller.

AVR This product not only breaks the old design pattern in the past, but also its design not only achieves high speed, but also has high reliability, the hardware structure is also simple, and the corresponding production cost is low.

With such a big market, Hu Yiting didn't want to let it go, of course, there was no negotiation for copying!

Hu Yiting copied it very smoothly, and by Saturday had completed the chip design, copied the underlying code, and then hand-copied the development system of the chip, so that users can carry out targeted programming and development after getting the chip to support the applications they need.

However, Hu Yiting does not plan to complete such a large amount of work by himself, he just wrote an outline and basic parameters for the development of single-chip microcomputer, and intends to hand it over to the company to complete internally, and strive to be able to bring this single-chip microcomputer to the market in the shortest possible time.

Hu Yanan returned to Hushan on Saturday to attend Hu Xiaomei's celebration banquet on Sunday, and on Saturday night Hu Yiting's family held a banquet by themselves, inviting Tong Mu's music director and manager Kong Jing to have a family banquet at home.