1 The current development status of single chip microcomputer 2 The company with more strength in ma

4 answers

Anonymous users2024-02-07

China's single-chip integrated circuit development history is very short, more than 20 years, the beginning is basically behind the global industry 20 years, but the development is rapid. From primary requirements to low performance to high performance, microcontroller integrated circuits have now realized the needs of customization.

Although China's research and development in the field of integrated circuits has made breakthroughs in a few fields, the level of patented technology is still at a disadvantage compared with leading countries, and the gap tends to increase. "The overall number is small, the technical level is low, the industrial technology coverage is very limited, and the patent group protection scale for the core technology of integrated circuits has not yet been formed.

It is not an easy task to improve the overall level of China's single-chip microcomputer decryption technology. However, we can follow the economic development strategy and use the first rich to lead the later rich to achieve common prosperity. In terms of the single-chip microcomputer decryption industry, it is to let some enterprises try to reform and innovate first, and then drive the rest of the enterprises to make progress together after the success of this part of the enterprises.

In fact, some companies have embarked on the road of "getting rich first". They broke the traditional business model, carried out secondary development of chips, innovated and designed more abundant new chips, and actively learned advanced decryption technology to successfully crack more and more difficult encryption chips.
Anonymous users2024-02-06

In 1971, Intel developed the world's first 4-bit microprocessor; Intel's Hough successfully developed the world's first 4-bit microprocessor chip, Intel 4004, marking the advent of the first generation of microprocessors and the beginning of the era of microprocessors and microcomputers. For his invention of the microprocessor, Hough was listed by The Economist magazine as one of the "7 most influential scientists since World War II". In November 1971, Intel introduced the MCS-4 microcomputer system (including 4001 ROM chip, 4002 RAM chip, 4003 shift register chip and 4004 microprocessor), of which the 4004 (below) contained 2300 transistors, the size specification was 3mm 4mm, and the computing performance far exceeded that of the ENIAC of that year, and the original price was $200.

In April 1972, Hoff et al. developed the first 8-bit microprocessor, the Intel 8008. Since the 8008 uses a P-channel MOS microprocessor, it is still a first-generation microprocessor. In 1973, Intel developed an 8-bit microprocessor 8080; In August 1973, Hoff et al. developed the 8-bit microprocessor Intel 8080, which replaced the P-channel with an N-channel MOS circuit, and the second generation of microprocessors was born.

The 8080 chip, clocked at 2MHz, is 10 times faster than the 8008, with 64KB of memory and 6000 transistors based on 6-micron technology. In April 1975, MITS released the first general-purpose Altair 8800, priced at $375 with 1KB of memory. It was the world's first microcomputer.

In 1976, Intel developed the MCS-48 series of 8-bit single-chip microcomputer, which was also the advent of single-chip microcomputer. Developed in 1976 by Zilog, the Z80 microprocessor is widely used in microcomputers and industrial automatic control equipment. At the time, Zilog, Motorola and Intel were in the microprocessor arena.

In the early 80s of the 20th century, Intel launched the MCS-51 series of 8-bit high-end single-chip microcomputers on the basis of MCS-48 series single-chip microcomputers. MCS-51 series microcontrollers have greatly improved both on-chip RAM capacity, I-O port function, and system expansion.
Anonymous users2024-02-05

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Anonymous users2024-02-04

The development of historical single-chip microcomputers has gone through 4-bit, 8-bit, 16-bit and 32-bit stages. 8-bit single-chip microcomputer is widely used in industrial control, intelligent interface, instrumentation and other fields due to its strong function, 8-bit single-chip microcomputer still occupies the mainstream position in medium and small-scale applications, representing the development direction of single-chip microcomputer, and plays an increasingly important role in the field of single-chip microcomputer application.

In the early 80s, Intel introduced the 8-bit MCS-51 series of microcontrollers.

The characteristics of single-chip microcomputer can be summarized as follows: high integration; Large storage capacity; Strong external expansion ability; Strong control function.

1. From the internal hardware to the software, there is a complete set of bitwise operating system, called the bit processor, and the processing object is not words or bytes but bits. It can not only process a bit of some special function registers on the chip, such as transmission, set, clearing, testing, etc., but also perform bit logic operations, which is very complete and easy to use.

2. At the same time, the RAM interval of the chip also opens up a dual-function address range, which is extremely flexible to use, which undoubtedly provides great convenience to users.

3. Multiplication and division instructions, which also bring convenience to programming. Many eight-bit single-chip microcomputers do not have multiplication function, and a subroutine call has to be programmed when multiplication, which is very inconvenient.