Developers of serial communication development tools that include the COMM-DRV family of serial communication libraries, DLL, TSR, OCX, and drivers for Windows XP, Windows 2000, Windows NT, Windows 98, Windows ME, Windows 95, Windows 3.x, and MSDOS. We also have a large selection of PCI & ISA multiport cards including RS232, RS422, and RS485. We have the complete serial communication solution.