E E e format E notation e.g. EAN EAROM earphones earth earth station EB EBCDIC e-bomb e-business e-cash echo cancellation echo suppressor echoplex ECL ECMA e-commerce e-credit ED edge edge connector edge triggered EDI editing menu editing window editor editor program EDO DRAM EDO RAM EDP edutainment EDVAC EEMS EEPROM effect effective effective address effective instruction effective time effectiveness effectiveness level efficiency e-form EIA EIDE Eifell Next