Serial-Port-Communication.com is devoted to serial port programming solutions by Eltima Software. Visit for the latest information about Virtual Serial Port Driver, Virtual Serial Port ActiveX Control, Shared Serial Ports, Serial Port Sniffer ActiveX, Serial Port Monitor and other professional software.

GPS/GIS software to affordable prices.

Describes interfacing the ECP (Extended Capabilities Port), complete with register details and waveforms.

Advanced Serial Port Monitor, Advanced Serial Data Logger and wide range of RS232 port software

Background information on the parallel port.

In this section we describe the hardware of the PC ISA bus.

A USB port connects more than computers and peripherals. It has the power to connect you with a new world of PC experiences. Everything USB.

Beyond Logic includes detailed information on Universal Serial Bus, Serial Ports (RS232), Parallel Ports (SPP/ECP/EPP/IEEE1284), Device Drivers and more. Most texts also come in PDF for easy Download & Printing

USB port speed compared to other port speeds.

Powerful TCP/UDP port-to-process mapper for Windows NT4, 2000, XP, 2003 (Freeware personal version available) - you'll never need Netstat again!