1. Q band

2. QAM (Quadrature Amplitude Modulation)

3. QBE (Query By Example)

4. QCIF (Quarter CIF)

5. QDOS (Quick and Dirty Operating System)

6. QFE (Quick Fix Engineering)

7. QFP (Quad FlatPack)

8. QNX

9. QoS (Quality of Service)

10. QPSK (Quadrature Phase Shift Keying)

11. QSXGA (Quad SXGA)

12. QTVR (QuickTime Virtual Reality)

13. quadbit

14. qualifier

15. quantization

16. quantization error

17. quantization noise

18. query

19. query criteria

20. query language

21. query string

22. queue (1)

23. queue (2)

24. queuing

25. QuickDraw

26. QuickTime

27. quirks mode

28. QVGA (Quarter Video Graphics Array)

29. QXGA (Quad Extended Graphics Array)