Variables data:
Recorded parametric or delta values, traceable to individual devices, as opposed to lot data (or attributes data).

VHSIC:
Very High Speed Integrated Circuits. The acronym applied to the Department of Defense sponsored research and development program to advance the state of the art in semiconductor device speeds, densities, power consumption, and system effectiveness.

VLSI:
Very Large Scale Integrated Circuits. VLSI devices are generally accepted to be those that contain more than 1000 gate equivalents, but less than 10,000.