Define SSI, MSI, LSI and VLSI.

Small scale Integration:

•  Small-Scale Integration (SSI) circuits have less than 10 gates. Example: 7404 inverter.

Medium scale Integration:

•  Medium-Scale Integration (MSI) circuits have up to 1000 gates. Example: 74161 counter.

Large scale Integration:

•  Large-Scale Integration (LSI) circuits have up to 10,000 gates. Example: 8-bit microprocessor (8085).

Very large scale Integration:

•  Very large scale Integration (VLSI) with gates counting upto lakhs. Example: 16-bit microprocessor (8086).

Ultra large scale Integration:

•  Ultra Large-Scale Integration (ULSI) is the process of integrating millions of transistors on a single silicon semiconductor microchip.