D2 Audio

Acquired by Intersil (NASDAQ: ISIL)

Cygnal

Acquired by Silicon Laboratories (NASDAQ: SLAB)

Crystal Semiconducter

Acquired by Cirrus Logic (NASDAQ: CRUS)

Crossroads Systems

NASDAQ: CRDS

Credence Systems

NASDAQ: CMOS

Copan Systems

Acquired by SGI (NASDAQ: SGI)

Conformative

Acquired by Intel (NASDAQ: INTC)

ColdWatt

Acquired by Flextronics International (NASDAQ: FLEX)

ClearCube

Desktop PC blade computing

Black Sand Technologies

Acquired by Qualcomm (NASDAQ: QCOM)