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GLOSSARY
Alternating current
(A C) is the type of electricity used in household wiring.
It's called "alternating" because the electrical flow rapidly alternates in
direction. The Gemini printers operate using standard 120 volt AC,
±
10%.
Alphanumeric is a character that is a letter of the alphabet, a numerical
symbol (a numeral), or any other symbol in a set of characters.
American Standard Code for Informational Interchange (ASCII) is a widely
accepted system for using the numerals 0 through 127 to represent
alphanumeric and symbolic characters.
Beginner's All-purpose SymboliC Instruction Code (BASIC) is a computer
language found on personal computers and used (with some variations) for
most small-computer programs.
Binary is a term that, in a general sense, pertains to a choice or condition
in which there are two possibilities. Specifically, it is used relative to
computers to refer to the binary mathematical numeration system involving
only two digits: one and zero. Computers code data in binary.
Bit is the building block of computer memory that represents one of two
values: zero or one, yes or no, on or off. A bit is a binary digit (0 or 1) that
is grouped into a 7-unit or 8-unit entity called a byte, which conveys data
in a computer system.
Byte is the standard unit for measuring computer memory that consists of
a grouping of adjacent binary digits (such as 00000111 to represent the
quantity "7"), which are manipulated as a unit by the computer. A byte can
represent one character.
Buffer is a temporary storage area that is used to balance the difference
between the operating speed of your computer and Gemini. The standard
buffer capacity of Gemini is 816 bytes, with an optional capability of over
8,000 more bytes.
Capacitor is an electrical device that usually consists of layers of
conducting and nonconducting materials, used to store energy and to
regulate electrical charges.
Cathode ray tube (CRT) is the display screen on your microcomputer.
Central processing unit (CPU) is the information-processing "traffic cop" of
the printer. The CPU receives data from the interface circuit (from your com-
puter) and transfers that data to the print-head circuitry.
Character is the word for a representative symbol (such as the letter "A" or
the numeral "5" or the
"$"
sign), which conveys all or part of an idea. The
Gemini 10x printers offer 96 standard ASCII characters, 96 italic characters,
64 special characters, 32 block graphic characters, 96 downloadable
characters as well as 88 foreign characters.
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