Casio Scientific Calculator FX-991ES PLUS 417 Functions

Description

Technical Specifications of Casio Scientific Calculator FX-991ES PLUS

• Total Functions: 417 integrated mathematical and scientific operations.

• Display Type: Natural Textbook Display with High-Resolution Dot Matrix.

• Calculation Logic: Mantissa + Exponent (10 + 2 digits) system.

• Power Source: Dual-power system utilizing solar cells and one LR44 battery.

• Constants & Conversions: 40 scientific constants and 40 metric conversions included.

• Dimensions: Slim profile measuring 11.1mm x 77mm x 165.5mm.

• Memory: Nine variable memories with 15 internal operation digits.

Usage and Functional Modes

• First, use the “MODE” button to select between computation and statistics.

• Next, input equations exactly as they appear in standard textbooks.

• Then, perform complex number calculations or matrix and vector operations.

• Afterward, utilize the “CALC” function for temporary formula substitution.

• Subsequently, solve quadratic or cubic equations using the built-in equation solver.

• Finally, convert units instantly using the shift commands on the keypad.

Advantages and Disadvantages

• Pros: The Casio Scientific Calculator FX-991ES PLUS offers a clear, multi-line display.

• Furthermore, the solar panel significantly extends battery life during daylight use.

• Cons: It lacks graphing capabilities found in the more expensive 9860 series.

• Additionally, the plastic keys may wear down after several years of heavy use.

Precautions and Maintenance

• Warning: Do not leave the calculator in high-temperature environments like cars.

• Avoid using sharp objects to press the reset button on the back.

• Never attempt to disassemble the solar panel or LCD housing.

What is Included in the Package

• 1x Casio Scientific Calculator FX-991ES PLUS.

• 1x Pre-installed LR44 alkaline button cell battery.

• 1x Comprehensive user manual and quick reference guide.

Tutorial how to use it properly: Click Here

Order more components from AmpFlick: Click Here

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