Texas Instruments 83CML/ILI/U Guidebook - Page 291

Entering and Using Strings What Is a String? A string is a sequence of characters that you enclose within quotation marks. On the TI-83, a string has two primary applications. • It defines text to be displayed in a program. • It accepts input from the keyboard in a program. Characters are the units that you combine to form a string. • Count each number, letter, and space as one character. • Count each instruction or function name, such as sin( or cos(, as one character; the TI-83 interprets each instruction or function name as one character. Entering a String To enter a string on a blank line on the home screen or in a program, follow these steps. 1. Press ƒ [ã] to indicate the beginning of the string. 2. Enter the characters that comprise the string. • Use any combination of numbers, letters, function names, or instruction names to create the string. • To enter a blank space, press To enter several alpha characters in a row, press y [A.LOCK] to activate alpha-lock. 3. Press ƒ [ã] to indicate the end of the string. "string" 4. Press Í. On the home screen, the string is displayed on the next line without quotations. An ellipsis (...) indicates that the string continues beyond the screen. To scroll the entire string, press ~ and |. Note: Quotation marks do not count as string characters. CATALOG, Strings, Hyperbolic Functions 15-3