Q

QA

Quality Assurance

QAM

Quadrature Amplitude Modulation

QBE

Query By Example

QC

Quality Control

QFP

Quad Flat Pack

QHE

Quantum Hall Effect

QoS

Quality Of Service

QPSK

Quadrature/Quaternary Phase Shift Keying

QWIP

Quantum-Well Infrared Photo detector