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WAN |
Wide Area Network |
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There are three different classes of computer network namely,
Local Area Network (LAN) that covers a small geographical area such as a
room, a building or a compound; Metropolitan Area Network (MAN) that has a
citywide coverage; and Wide Area Network (WAN) that covers the whole globe or
beyond the globe. |
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MICR |
Magnetic
Ink Character Reader |
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MICR (Magnetic Ink Character Reader) is kind of scanner that
can scan and identify the writing of magnetic ink. This device is used in
banks to verify signatures in Checks. |
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EBCDIC |
Extended
Binary Coded Decimal Interchange Code |
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EBCDIC is an 8-bit binary code for larger IBMs primarily
mainframes in which each byte represent one alphanumeric character or two
decimal digits. 256 characters can be coded using EBCDIC. |
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BCD |
Binary
Coded Decimal |
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BCD is a binary coded notation in which each of the decimal
digits is expressed as a 8-bit binary numeral. For example in binary coded
decimal notation 12 is 0001 0010 as opposed to 1100 in pure binary. |
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ASCII |
American
Standard Code for Information Interchange |
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ASCII is a code which converts characters – letters, digits,
punctuations and control characters such as Alt, Tab etc – into numeral form.
ASCII code is used to represent data internally in micro-computers. ASCII
codes are 7 bits and can represent 0 to 127 and extended ASCII are 8 bits
that represents 0 to 255. |
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EDSAC |
Electronic Delay Storage Automatic Calculator |
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It is first generation of computer . IBM-1401, CDC-1604 is
second generation computer. ICL-2900 is a fourth generation computer. EDSAC
is important in the development of computer since it was the first computer
to use John von. Neumann’s Stored Program Concept. It used 3000 vacuum tubes
and computers with vacuum tubes are of first generation computers. |
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FORTRAN |
Formula
Translation |
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FORTRAN (Formula Translation) is one of the earlier High Level
programming languages used to write scientific applications. It was developed
by IBM in 1956. |
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EEPROM |
Electrically
Erasable Programmable Read Only Memory |
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There are three types of ROM namely, PROM, EPROM and EEPROM.
PROM can’t be reprogrammed, EPROM can be erased by exposing it in high
intensity ultraviolet light and EEPROM can be erased and reprogrammed
electrically. It is not needed to be removed from the computer to be
modified. |
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