Generation of Computers

• Vacuum tube - 1946-1957 
• Transistor - 1958-1964 
• Small scale integration - 1965 on 
• Up to 100 devices on a chip 
• Medium scale integration - to 1971 
• 100 to 3.000 devices on a chip 
• Large scale integration - 1971-1977 
• 3.000 to 100.000 devices on a chip 
• Very large scale integration - 1978 to date 
• 100000-100000000 devices on a chip 
• Ultra large scale integration 
• Over 100 million devices on a chip
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