4 The fourth generation of the computer
era is from 1971 to 1989, with the invention of the computer in the large-scale integration, or LSI technology is contained in a memory transistor bulk silicon tools like the one sheet. It contains the number 15,000 transistor, and if a very large-scale integration, or VLSI will be packed with more than 1 million transistor circuits and speed, more work is measured in pico-seconds.
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