Epson LQ-2500 time, GL-6, Glossary, at a time, and a serial interface transmits data one, Three number systems are commonly used with printers:

Macro

Agroup of settings that can be saved and recalled by pressing a sequence of buttons. SelecType has four macros.

Main menu

in SelecType, the main menu displays the four modes: *Load Macro, *Change Macro, *Change Defaults, and *Print Out Settings.

Number systems

Three number systems are commonly used with printers:

Decimal is base 10 and uses the digits 0, 1, 2, 3,4, 5, 6, 7, 8, and 9. (This is the most familiar system.)

Hexadecimal (hex) is base 16 and uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and E This is frequently used by programmers. Anv decimal number between 0 and 255 can be expressed by a two- digit hex number.

Binary is base 2 and uses only the digits 0 and 1. All information in computer systems is handled in binary form representing electrical signals that are ON or OFF A binary digit is often called a bit; any decimal number between 0 and 255 can be expressed by an eight-bit binary number.

One-inch skip

A SelecType setting that causes the printer to stop printing, skip over a perforation in continuous-feed paper, then resume printing again. Most application programs handle this task, but it may be useful when listing programs.

Paper bail

The part of the printer that holds the paper against the platen.

Paper-out sensor

A small switch behind the platen that sends a signal when it is not in contact with paper

Parallel interface

An interface is the connection between the computer and the printer. There are two types: a parallel interface transmits data one character or code at a time, and a serial interface transmits data one bit at a time.

GL-6 Glossary