C
- CAD – Computer Aided Design - Software
- CAE – Computer Aided Engineering - Software
- CAM – Content Adressable Memory; Common Acces Method - Speicher
- CAPI – Common Application Programming Interface - Internet
- CAS – Column Address Strobe - Speicher
- CAT – Category Kabel - Netzwerk
- CBR – CAS Before RAS - Speicher
- CCD – Charge Coupled Device - Kamera
- CCFL – Capacitor-Coupled FET Logic - Monitor
- CD-ROM – Compact Disc ROM - Massenspeicher
- CF Card – Compact Flash Card - Kamera
- CISC – Complex Instruction Set Computer - Prozessor
- CMMU – Cache Memory Management Unit - Prozessor
- CMOS – Complementary MOS - Elektronik
- CnQ – Cool and Quiet - Prozessor
- CODEC – Coder/Decoder, Compressor/de-Compressor - Multimedia
- C-PGA – Ceramic Pin Grid Array - Elektronik
- Cpi – Clock Cycles per Average Instruction - Prozessor
- CPU – Central Processing Unit - Prozessor
- CRC – Cyclic(al) Redundancy Checking - Massenspeicher