The Evolution of Integrated Circuits
In the earlier days computers were designed with transistors and vacuum tubes. During these periods, computers were huge in size and their capability was limited. They needed a huge cooling system and performed very limited operations at a time.
During 1959 two different scientists invented IC’s. Jack Kilby from Texas Instruments made his first germanium IC during 1959 and Robert Noyce made his first silicon IC during the same year.
But ICs were not the same since the day of their invention. They have evolved a long way and the way in which they evolved is shown below.
SSI: SSI is Small Scale Integration which can support up to 100 electronic components per chip.
MSI: MSI is Medium Scale Integration which can support up to 3000 electronic components per chip.
LSI: LSI is Large Scale Integration which can support 100,000 electronic components in a single chip.
VLSI: VLSI is Very Large Scale Integration which can support 1,000,000 electronic components in a single chip.
ULSI: Ultra Large Scale Integration can support more than one million electronic components in a single chip.
Starting from 100 electronic components in a chip, ICs can support more than 1 million electronic components today. Such an invention has greatly benefited the evolution of computers. All the arithmetic, logic and memory functions can be performed by a single chip placed on the computer.