Texas Instruments TI-89 Developer's Guide

Chapter 14: Data Types
147
TI
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89 / TI
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92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
14.1. Expression
There are several different data objects that can appear as an expression.
14.1.1. Non-Negative or Negative Integers
Description Bytes
Data length of integer 2
Non-negative/negative integer (bignum first) binary data var. max 255
Length of data field 1
NONNEGATIVE/NEGATIVE_INTEGER_TAG 1
Table 14.2: Data Object for a Non-Negative or Negative Integer
14.1.2. Positive or Negative Fractions
Description Bytes
Data length of fraction 2
Positive/negative denominator (bignum first) binary data var. max 255
Length of denominator 1
Positive/negative numerator (bignum first) binary data var. max 255
Length of numerator 1
POSITIVE/NEGATIVE_FRACTION_TAG 1
Table 14.3: Data Object for a Positive or Negative Fraction

Texas Instruments TI-89 Specifications

General

Display size (HxV)	100 x 160 mm
Memory type	639K FLASH ROM, 188K bytes RAM
Compatible operating systems	Operating System 2.09
Battery type	AAA