What are the stages of the development of computer systems?

Text stage and window stage.

Hello, I hope my answer can help you.

1. The first generation: tube digital machine (1946-1958).

Features: large size, high power consumption, poor reliability. Slow (typically thousands to tens of thousands of operations per second), expensive, but laid the foundation for future computer development.

2. The second generation: transistor digital machine (1958-1964).

Features: Reduced size, reduced energy consumption, improved reliability, increased computing speed (generally 100,000 times per second, up to 3 million times), and greatly improved performance compared to the first generation computer.

3. The third generation: integrated circuit digital machine (1964-1970).

Features: Faster speed (generally millions to tens of millions of times per second), and reliability has been significantly improved, ** further declined, and the product is moving towards generalization, serialization and standardization. The application field began to enter the field of word processing and graphic image processing.

4. The 4th generation: large-scale integrated circuit machine (1970 to present).

Features: In 1971, the world's first microprocessor was born in Silicon Valley, ushering in a new era of microcomputers. The application field has gradually moved from scientific computing, transaction management, and process control to the home.

1. Manual calculation tools.

Humans originally used their fingers to make calculations. People have two hands and ten fingers, so it is natural to use their fingers to keep count and use decimal notation. Although it is convenient to perform calculations with your fingers, the scope of calculations is limited and the results cannot be stored.

2. Mechanical calculation tools.

In the 17th century, calculation tools using gear technology appeared in Europe. In 1642, the French mathematician Blaise Pascal invented the Pascal adder, the first mechanical calculation tool in human history, and its principles had a lasting impact on later calculation tools.

3. Electromechanical computer.

In 1886, the American statistician Herman Hollerith borrowed the principle of punched cards from Jacob's loom, used punched cards to store data, used electromechanical technology to replace purely mechanical devices, and manufactured the first tabulating machine that could automatically add and subtract four operations, accumulate archiving, and make reports.

In 1939, John Atanasoff, a professor of mathematical physics at the University of Iowa in the United States, and his graduate student Bailey developed an electronic computer called ABC. Due to financial constraints, they developed only one prototype capable of solving a system of linear algebraic equations containing 30 unknowns.

It can be divided into four stages: 1854, 1890, 1890, early 20th century, mid-20th century, late 20th century, and present.

The computer goes through the mainframe stage, the small computer stage, the microcomputer stage, the client server stage (that is, the LAN stage), and the Internet stage.

The development of computer systems has gone through the following stages: the era of electron tubes, the era of transistors, the era of integrated circuits, the era of microprocessors, and the era of multi-core.

1. The era of electron tubes: In the 50s of the 20th century, computer systems used electron tubes as the main electronic components, which were bulky, high in energy consumption and high in failure rate.

2. Transistor era: In the 60s of the 20th century, the emergence of transistors made computer systems more miniaturized, more reliable and more efficient, and the first generation of computers came out.

3. The era of integrated circuits: In the 70s of the 20th century, the application of integrated circuits made computer systems smaller and more powerful, and the second generation of computers appeared.

4. The era of microprocessors: From the 80s to the 90s of the 20th century, the birth of microprocessors made computer systems more intelligent and programmable, and the third generation of computers came out.

5. Multi-core era: Since the 21st century, computer systems have entered the multi-core era, the processing power and efficiency of computers have been greatly improved, and emerging technologies such as cloud computing and artificial intelligence have also emerged.

Uses of computer systems:

Computer systems have a wide range of uses, mainly including the following aspects: data processing, information storage, communication, control, entertainment, learning, etc. It has important applications in various fields such as industry, commerce, science, and medicine.

In industrial production, computer systems are used to automate production, quality control, and production planning, among other things; In the business sector, computer systems are used to manage and analyze data, network transactions, and marketing, among other things; In scientific research, computer systems are used for simulation experiments, data analysis, and calculations, among other things; In the medical field, computer systems are used for medical image analysis, medical information management, and patient monitoring, among others. The use of computer systems is constantly expanding and upgrading, creating more convenience and innovation for human beings. <>