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  CNET GLOSSARY: Terms for the techie
ECP
Extended Capabilities Port Microsoft and Hewlett-Packard developed the ECP specification to extend the speed of the parallel port and to provide two-way (bidirectional) throughput between the computer and peripheral devices such as a printer or a scanner. ECP works a little better than EPP in a multitasking environment because it uses direct memory access (DMA) and buffering. 
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