All basic calculators are not equipped equally. Casio’s SL-450S reaches beyond the basics with many unique functions and features designed to help beginning math students and their teachers.
8 digits LCD Display
Floating negative sign appears to the left of then number displayed
Function signs in display
Hard, plastic tamperproof keys
Basic function: plus, percent, plus/minus, square root, memory keys
Constants for +/-/x/÷
Ability to clear last and/or all entries