VLSI is the short-form for Very-large-scale integration, a process that means to create integrated circuits by combining thousands of transistor-based circuits into a single chip.

VLSI finds immediate application in DSP, Communications, Microwave and RF, MEMS, Cryptography, Consumer Electronics, Automobiles, Space Applications, Robotics, and Health industry.

Nearly all modern chips employ VLSI architectures, or ULSI (ultra large scale integration). The line that demarcates VLSI from ULSI is very thin