Evolution of logic complexity

1. Evolution of logic
complexity in Integrated
Circuit for information
technology services
By Prof. Hitesh Dholakiya
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2. Outlines
❖ Evolution in logic complexity in Integrated circuits
❖ Evolution of size in Integrated services
❖ Prominent Information Technology services
❖ Features of Integrated circuits
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3. Evolution in logic complexity in IC’s
MSI
• Medium Scale Integration
• Introduced in 1967
• Logic Block per chip 20-200
LSI
• Large Scale Integration
• Introduced in 1972
• Logic Block per chip 200-2000
VLSI
• Very Large Scale Integration
• Introduced in 1978
• Logic Block per chip 2000-20000
ULSI
• Ultra Large Scale Integration
• Introduced in 1989
• Logic Block per chip 20000 >>
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4. Evolution of size in Integrated services
Minimum
feature
Size
in
(µm)
4.0 –
3.5 –
3.0 –
2.5 –
2.0 –
1.5 –
1.0 –
0.5 –
0.0 –
Year
1975 1980 1985 1990 1995 2000
4.0
0.1
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5. Prominent Information Technology services
Year
1975 1980 1985 1990 1995 2000
Main Frame Computer Personal Computer Computer Network
Consumer Electronics Portable Computer
Data Communication Multi-media Application
Wireless/Cellular Data Communication
Speech Processing
Video on Demand
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6. Features of Integrated circuits
❖ Less area/volume
❖ Less power consumption
❖ Less testing requirement at system level
❖ Higher reliability, mainly due to improved on chip interconnects
❖ Higher speed, mainly due to reduced interconnection length
❖ Significant cost savings
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