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G
GL Characters Graphic left: Graphic left characters map half of the
character set table. The GL characters reside at 0 -
127 hex and comprise the ASCII portion of the table.
GR Characters Graphic right: Graphic right characters map half of
the character set table. The GR characters reside at
128 - 255 hex and comprise the graphics portion of
the table.
H
hammer An assembly consisting of a hammer spring and a
hammer tip.
hammer spring The flat piece of metal, made of spring steel, which
supports and pushes the hammer tip.
hammer tip The small, round point, located near the end of the
hammer spring, which strikes the ribbon and leaves a
dot on the paper.
hex codes Based on a numeral system with a radix of 16.
hex dump A hex dump is a translation of all host interface data
to its hexadecimal equivalent. A hex dump is a
printer self-test typically used to troubleshoot printer
data reception problems.
HGS Horizontal Grid Size
host computer The computer that stores, processes, and sends
data to be printed, and which communicates directly
with the printer. The term “host” indicates the
controlling computer, since modern printers are
themselves microprocessor-controlled computer
systems.
HS High Speed or Draft Print characters.
HT Horizontal Tab.
Hz Hertz. Cycles per second. Frequency.
I
IEEE Institute of Electrical and Electronic Engineers, Inc.
IGP Intelligent Graphics Processor. An interface that
converts graphics commands received from the host
computer to binary plot data that is usable by the
printer. The IGP is the board-installed Intelligent
Graphics Processor. The IGP provides on-line forms,