As we know VLSI stands for "Very Large Scale Integration".A field which involving packing more and more logic devices into smaller and optimum areas.The boom in VLSI technology began in the 1970s when complex semiconductor and communication technologies were being developed.The first semiconductor chips held two transistors each. Subsequent advances added more and more transistors, and, as a consequence, more individual functions or systems were integrated as time passed.
Today u can find VLSI circuits n devices are everywhere our computer,car, and almost every electronic gadgets.
The first integrated circuits held only a few devices, perhaps as many as ten diodes, transistors, resistors and capacitors, making it possible to fabricate one or more logic gates on a single device. Now known retrospectively as small-scale integration (SSI), improvements in technique led to devices with hundreds of logic gates, known as medium-scale integration (MSI). Further improvements led to large-scale integration (LSI), i.e. systems with at least a thousand logic gates
VLSI has been around for a long time, there is not much advancement in technology prospective ,but due to continuous advances in the world of computers, there has been a dramatic proliferation of tools that can be used to design VLSI circuits. Alongside, obeying Moore's law, the capability of an IC has increased exponentially over the years, in terms of computation power, utilization of available area, yield. The combined effect of these two advances is that people can now put diverse functionality into the IC's, opening up new frontiers. Examples are embedded systems, where intelligent devices are put inside everyday objects, and ubiquitous computing where small computing devices proliferate to such an extent that even the shoes you wear may actually do something useful like monitoring your heartbeats n other physiological parameters.
we'll discuss more about the Technology as well Design prospective in next posts.
