E

Electronic Industries Association (EIA)
EIA is a national trade organization that publishes hardware-oriented standards for data communications. EIA-232-D is an example (corresponds to RS-232).

encryption
Encryption is the process of scrambling data by changing it in a series of logical steps, called an encryption algorithm. To increase security, an encryption algorithm uses a numerical pattern, or "key," to guide the scrambling process. Different algorithms and keys will each produce data scrambled, or encrypted, in different patterns.

error correcting code (ECC)
ECC memory tests the accuracy of data as it passes in and out of memory.

Ethernet
Ethernet technology, originally developed in the 1970s by Xerox Corporation in conjunction with Intel and DEC, is now the primary medium for LANs. The original Ethernet has 10-Mbps throughput and uses the CSMA/CD method to access the physical medium. Fast Ethernet (100-Mbps Ethernet) and Gigabit Ethernet (1,000-Mbps Ethernet) are later technologies based on the original approach.

expert system
An expert system is a sophisticated computer application that attempts to solve problems by analyzing data according to a set of rules designed by human experts.

Extended Binary Coded Decimal Interchange Code (EBCDIC)
EBCDIC is the IBM standard for binary encoding of characters. It is one of the two most widely used codes to represent characters, such as keyboard characters (ASCII is the other). See ASCII.

Extended Industry Standard Architecture (EISA)
EISA is a 32-bit computer bus specification introduced in 1988. It provides additional features beyond that of the ISA bus standard.