Epson LQ 1050 User Manual - Page 208

Glossary 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 F. This is frequently used by programmers. Any 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. 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. Paper tension unit The part of the printer that fits on top of the platen to assure proper paper-feed tension. 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. Parity Parity is a method for a computer and printer to check the reliability of data transmission. Pitch Indicates the number of characters per inch (cpi) For example, 10 pitch printing is 10 cpi. Platen The black roller that provides a backing for the printing. GL-5