The evolution of the computer
, 1. The vacuum tube
started from 1990.1951 - 1958 used vacuum tubes (Vacuum Tube) circuit is important in your work. Is the initial knowledge about computer technology just can. In this era, including UNIVAC computerENIAC Vacuum Tube or vacuum tube computer. In this era, often used for business, such as salary, accounting, or control the inventory. The characteristics of the computer era 1 "used vacuum tubes as the main ingredient.High power, high heat "work with machine language (Machine Language)" language symbols, such as Symbolic Language. And the Assembly
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2. The transistor 1998. 1959 - 1964 transistor (Transistor) circuit is important, which is the device developed by leading scientists from Bell Laboratories, three (Bell Lab.): William Shockley (W. Shock), John Bardeen (J, Bardeen).Walter, Brett Chorten (H. W.Brattain) by the transistor electronic circuit boards that are smaller than the vacuum tubes, but remember the higher, no time to warm up. Low power consumption, working at high speeds. In addition to the technology of circuit.Such as computer languages, is the assembly language (Assembly Language) and high-level languages, such as English, FORTRANCOBOL for unit record information is the magnetic tape has been used Transistor
3. The integrated circuit
1990. 1965 - 1670 is era computer start modifying. Due to the development of integrated circuits (IC:Integrated Circuit) as the work of the company Texas Instrument (Texas Instruments, Co.) that computer smaller. The minicomputer IC: Integrated Circuit
4 era VLSI
1990.1971 to present is the era of the circuit VLSI (Very Large Scale Integration) in the form of a microprocessor (Microprocessor). Change the system memory from the magnetic ring is called RAM semiconductor memory (Random Access Memory).(PC:Personal Computer) Microprocessor - VLSI (Very Large Scale Integration) Apple I Apple II
. 5. The network eraAfter the invention of VLSI circuits. To use a processor and main memory in a computer, circuit development V แอลเอสไอ has still continuously and quickly.2 times every month. As a result, the computer has 18 polishing ability increases rapidly. When the computer can run faster. Data processing has much work came several tasks at the same time.The popularity of computer aided is expanding rapidly in large circles. This effort will in the computer application to several categories.
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