The fourth-generation computer refers to the computer made after 1970 using large-scale integrated circuits (LSI) and very large-scale integrated circuits (VLSI) as the main electronic components.
The electronic components of the fourth generation computer are large-scale and ultra-large-scale integrated circuits.
Large-scale and very large-scale integrated circuits appeared in 1967 and 1977 respectively. Computers assembled from large-scale and very large-scale integrated circuits are called fourth-generation electronic computers. (Recommended study: phpstorm)
The American ILLIAC-IV computer is the first computer to fully use large-scale integrated circuits as logic components and memory. It marks the beginning of the computer The development has reached the fourth generation.
In 1975, the American Amul Company developed the 470V/6 computer, and then the Japanese Fujitsu Company produced the M-190 machine, which is a relatively representative fourth-generation computer.
The University of Manchester in the UK began developing the fourth-generation aircraft in 1968. In 1974, the ICL2900 computer was successfully developed, and in 1976, the DAP series of computers was successfully developed.
In 1973, Germany's Siemens, France's International Information Corporation and the Netherlands' Philips jointly established Unified Data Corporation. Jointly developed the Unidata7710 series of machines.
The fourth generation of electronic computers uses large-scale and ultra-large-scale integrated circuits as basic electronic components. The fourth-generation computer refers to computers made from 1970 onwards using large-scale integrated circuits (LSI) and very large-scale integrated circuits (VLSI) as the main electronic components.
For example, the 80386 microprocessor can integrate approximately 320,000 transistors on a single chip with an area of approximately 10mm X l0mm.
Another important branch of the fourth generation of computers is microprocessors and microcomputers developed based on large-scale and very large-scale integrated circuits. One of the earliest personal computers was the Apple II computer of the American Apple Company, which began to be sold on the market in 1977.
Then TRS-80 (Radio Shack Company) and PET-2001 (Commodore Company) appeared. Since then, various personal computers have sprung up one after another.
Personal computers at that time were generally based on 8-bit or 16-bit microprocessor chips, with a storage capacity of more than 64KB. They had input and output devices such as keyboards and monitors, and could be configured with small printers, floppy disks, and cassettes. Peripheral devices such as disks, and can be self-programmed using various high-level languages.
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