| ComputerBoards, Inc. | | Manufacturers of data acquisition hardware and software and virtual instrumentation for PCs. |
| ConnectOne | | Embedded Internet products, iChip Internet Controller chips for dial-up, LAN and wireless connectivity of devices. |
| Control Solutions | | Offers embedded remote alarm monitoring, Ethernet to LonWorks gateways, Modbus gateways, embedded Internet, control systems and components. |
| COTS Technologies | | Provides standard and custom chassis for the bus and board industry, specializing in development chassis for VME, VME64, VME64x,CPCI, and Eurocard. |
| Crystalfontz | | Intelligent serial interface (RS-232, TTL, and SPI) character LCD modules with high level command set and advanced features. |
| Cyclone Microsystems | | Designer and manufacturer of intelligent I/O controllers solutions for CompactPCI, PCI and PMC buses. |
| DapDesign | | IEEE1394 related multimedia and analyzer developer. |
| Datasound Laboratories Ltd | | Specializes in embedded PC/104 and small format single board computers, PC compatible computers and custom design hardware. |
| Dawn VME Products | | Design and manufacture of VME, VME64x, cPCI, and VXI backplanes, card cages, chassis and powered enclosures. |
| Derivation Systems, Inc. | | Developer of formal verification systems for high assurance hardware/software applications and embedded systems products. |
| Diamond Point International | | Specializes in suppling a wide range of PC/104, dimmpc, gps and industrial PC based equipment to the UK industry. |
| DiLet Associates LLC | | Manufacturers' rep servicing Southern California. Selling hardware and software based on CompactPCI, PMC, PCI, VME and custom form factors supporting real-time operating systems. |
| Direct Insight | | Provides complete toolchains, including in-circuit emulators and device programmers, for almost all embedded processors. |
| DNA Computer Solutions | | Provides PowerPC based single board computers and systems along with VxWorks and Linux support software package and industry standard VSIPL signal processing libraries. |
| Dominion Electronics | | Design and development of C-programmable controllers, available as board only, packaged or as operator interfaces. |
| DonTronics | | Microcontroller hardware and software supplier. | |
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