CASIO fx-570ES PLUS and fx-991ES PLUS Scientific Calculator User's Guide

About this manual

This manual serves as a comprehensive guide for the CASIO fx-570ES PLUS and fx-991ES PLUS scientific calculators. It details essential procedures such as initializing the device, adjusting display contrast, and understanding key markings and indicators. The document explains how to navigate menus and select specific calculation modes including general calculations (COMP), complex numbers (CMPLX), statistics (STAT), equations (EQN), matrices (MATRIX), vectors (VECTOR), and base-n systems (BASE-N).

What's inside

• Initializing the Calculator
• Safety Precautions
• Turning Power On and Off
• Adjusting Display Contrast
• Using Menus
• Specifying the Calculation Mode
• Configuring the Calculator Setup
• Inputting Expressions and Values
• Basic Calculations
• Replacing the Battery

Specifications

Frequently asked questions

How do I initialize the calculator?

Press 9(CLR), then select 3(All) and confirm with =(Yes).

When should I replace the battery?

Replace it at least once every three years for the fx-991ES PLUS or two years for the fx-570ES PLUS.

How do I adjust the display contrast?

Press 1N (SETUP), select c6( ]CONT '), and use d and e to adjust.