E

Electronic Mail (E-mail)
E-mail is a widely used application for transferring messages and files from one computer system to another. If the two computers sending messages use different types of e-mail packages, an e-mail gateway is required to convert from one format to another.

Encoding
Encoding refers to the process of translating binary data (1s and 0s) into signals to be transmitted across a physical link, such as a twisted pair cable. Signals used to represent the binary data can take many forms. The two most common forms are electrical signals and light signals.

Ethernet
Ethernet technology, originally developed in the 1970s by Xerox Corporation in conjunction with Intel and Digital Equipment Corporation, is the primary medium for local area networks (LANs). The original Ethernet has 10 Mbps bandwidth. Today, 100 Mbps Ethernet (Fast Ethernet) and 1,000 Mbps (Gigabit Ethernet) are also used.

Extended Binary Coded Decimal Interchange Code (EBCDIC)
EBCDIC is the IBM standard for binary encoding of characters.

Extended Data Output (EDO)
EDO is a type of RAM memory chip with faster performance than conventional memory. Unlike conventional RAM, EDO RAM retrieves a block of memory as it sends the previous block to the CPU.

Extended Industry Standard Architecture (EISA)
EISA is a 32-bit bus technology for PCs that supports multiprocessing. EISA was designed in response to IBM's MCA; however, both EISA and MCA were replaced by the PCI bus. See "PCI" and "bus."