In computing, a character set is a system of assigning numbers to characters so that text can be represented as a list of numbers (which are then stored, for example, as a file). For example,

ASCII ASCII ( ), an acronym for American Standard Code for Information Interchange, is a character encoding standard for representing a particular set of 95 (English language focused) printable character, printable and 33 control character, control c ...

assigns the hexidecimal number 41, or 65 in base 10, to "A". As part of the design process,

Texas Instruments Texas Instruments Incorporated (TI) is an American multinational semiconductor company headquartered in Dallas, Texas. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog ...

(TI) decided to modify the base Latin-1 character set for use with its calculator interface. By adding symbols to the character set, it was possible to reduce design complexity as much more complex parsing would have to have been used otherwise.

TI-83 Plus/84 Plus Series

Code points 0xDF to 0xF0 differ between the small font and large font.

Small font

Large font

TI-86

The

TI-86 The TI-86 is a programmable graphing calculator introduced in 1996 which was produced by Texas Instruments. The TI-86 uses the Zilog Z80 microprocessor. It is partially backwards-compatible with its predecessor, the TI-85. In addition to having ...

character encoding aligns with the

printable characters, but includes its own characters in place of the

C0 control codes The C0 and C1 control code or control character sets define control codes for use in text by computer systems that use ASCII and derivatives of ASCII. The codes represent additional information about the text, such as the position of a cursor, a ...

and 0x7F, as well as defining its own characters in the 0x80 to 0xFF range (which is not part of ASCII).

TI-89/92 Series

The

TI-89 The TI-89 and the TI-89 Titanium are graphing calculators developed by Texas Instruments (TI). They are differentiated from most other TI graphing calculators by their computer algebra system, which allows symbolic manipulation of algebra ...

/ 92 Series calculators use a character encoding similar to

Latin-1 ISO/IEC 8859-1:1998, ''Information technology—8-bit single-byte coded graphic character sets—Part 1: Latin alphabet No. 1'', is part of the ISO/IEC 8859 series of ASCII-based standard character encodings, first edition published in 1987 ...

, except that most of the control characters are replaced with mathematical symbols or Greek letters. All characters are printable except the

null character The null character is a control character with the value zero. Many character sets include a code point for a null character including Unicode (Universal Coded Character Set), ASCII (ISO/IEC 646), Baudot, ITA2 codes, the C0 control code, and EB ...

References