Printronix ANSI Printer manual For example Bold refers to a heavy or thick

Appendix C

	communicate properly, a printer must be configured
	to operate at the same baud rate as its host
	computer.
bit	Contraction of binary digit. A bit is a digit in the binary
	number system, represented by a 0 or a 1. A bit is
	the smallest unit of storage in a digital computer,
	where 0 and 1 are represented by different voltages.
	Groups of bits form other units of storage called
	nibbles, bytes, and words.
bold	A print attribute specifying text of a heavy line
	thickness. See also character weight.
Boot-up	The start-up procedure which causes a computer
	operating system to be loaded into main memory.
buffer	A reserved area in memory that data is written to and
	read from during data transfers.
bus	A circuit for the transfer of data or electrical signals
	between two devices.
byte	A group of consecutive bits forming a unit of storage
	in a digital computer and used to represent one
	alphanumeric character. A byte usually consists of 8
	bits, but may contain more or fewer bits, depending
	on the computer or protocol.
	C
character cell	The invisible rectangular space occupied by a
	character, including the white space around the
	character. The height of a cell remains constant even
	with changes in the current line spacing, and the
	width is equal to the current character spacing. Used
	as a unit of spacing.
character proportion	The ratio of character height to character width. See
	also compressed and expanded.
character set	A set of codes, each of which represents a control or
	printable character, including symbols, punctuation,
	numbers, diacritical markings, and alphabet
	characters. Each character is assigned a unique
	address in memory.
character weight	The degree of lightness and thickness of printed text.
	For example: “Bold” refers to a heavy or thick
	character weight, as shown in this sentence.
	“Medium,” “normal,” or “book weight” refer to the
	character weight used in this sentence.
checksum	A value used to verify microcode correctness.
coax	Coaxial cable. An electrical signal conductor
	consisting of a single wire surrounded by insulation

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