Computer Glossary E

EDO extended data out. To read a word of PC memory it must be pre-charged first. EDO memory speeds up this sequence by precharging the next word while still reading the current word.

EIDE enhanced integrated drive electronics. An enhanced version of IDE that supports large hard disks, faster access speeds and DMA.

Emoticon Set of keyboard characters used in emails to denote joking, sarcasm, boredom and so on. For instance, :) indicates a joke; :( unhappiness.

EPP/ECP enhanced parallel port/extended capabilities port. Improved parallel port which provides transfer rates of over 2MBps (megabytes per second) and bidirectional operation. The latter is mainly used by printer monitoring software as it can receive status information from the printer while sending it data. ECP mode is designed for other devices such as Zip drives.

ECP error correction protocol. Technique used in modems to cancel out extraneous electrical noise and repeat unsuccessful online transmissions.

Ethernet The original form of the most popular type of network today that connects PCs together over shared cabling. It was called ethernet in remembrance of the ether from which electromagnetic radiation was once thought to flow.

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