Computing
- Tightly-coupled Memory, memory which resides directly on the processor of a computer; see Multiprocessing
- Toolkit for Conceptual Modeling, a collection of software tools to present specifications of software systems in the form of diagrams, tables, trees, and the like
- Total Commander, a shareware file manager for Microsoft Windows
- Trellis coded modulation, a signal modulation scheme for telecommunications
- Trusted Computing Module, a microprocessor that implements the concept of Trusted Computing
- Time Compression Multiplexing
- Transmission Control Module
- Thermal Conduction Module (IBM)
Read more about this topic: TCM