Canon MF7280 imageCLASS MF7280 PCL/UFR II Printer Guide - Page 48

Symbol Set, The process by which letters are printed

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Symbol Set When you print the letter "A," the host computer sends a code corresponding to "A" (hexadecimal 41 is an example of this) to the machine. This code is referred to as the character code. The machine stores an internal representation of each character, and selects from among these character patterns the pattern corresponding to the received code. In this case, the machine searches for the pattern for "A," and prints it. ■ The process by which letters are printed 4 Appendix Computer Machine Character Patterns The machine uses a fixed rule to decide which letter or symbol corresponds to the character code sent from the host computer. For example, the letter "A" is printed for the hexadecimal code "41." The rule which determines the correspondence between character codes and printed letters is called the "symbol set." 4-6 Some Basic Facts about Fonts

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Some Basic Facts about Fonts
4-6
4
Appendix
Symbol Set
When you print the letter "A," the host computer sends a code corresponding to "A"
(hexadecimal 41 is an example of this) to the machine. This code is referred to as
the character code. The machine stores an internal representation of each
character, and selects from among these character patterns the pattern
corresponding to the received code. In this case, the machine searches for the
pattern for "A," and prints it.
■
The process by which letters are printed
The machine uses a fixed rule to decide which letter or symbol corresponds to the
character code sent from the host computer. For example, the letter "A" is printed for the
hexadecimal code "41." The rule which determines the correspondence between
character codes and printed letters is called the "symbol set."
Computer
Machine
Character
Patterns