The first, use the technology of vacuum tubes. A punched card
second. Use technology of transistor is a tape. The process is respectively (Sequential Processing)
communications based on the technology of IC (integrated, circuitIC) is a magnetic disk style is the work several programs simultaneously (Multiprogramming) and online (on-line)
the four, use of technology, large scale integrated circuit (Large-scale, integrationLSI) of electric circuit should a piece of this technology is the microprocessor (microprocessor) said that "Computer on a chip" in the age of people.
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