TI 30Xa Scientific Calculator

Hardware
Hard plastic, color-coded keys
One-line, 10-digit display
Battery power
Impact-resistant cover
Built-in functionality
Fraction/decimal conversions
Change improper fractions to mixed numbers
Automatic simplification of fractions
Negation key
One constant
Combinations and permutations
Trigonometry
Hyperbolics
Logs and antilogs
Convert angles from degrees to radians to grads
%, x²,x3, ¹/x, xˆy, ~, x!
Fixed decimal capability
One-variable statistics
AOS (Algebraic Operating System)
Three memory variables
Scientific and engineering notation