Casio FX-7400GIII - Graphing Calculator

Overview

The Casio fx-7400GIII is a versatile, programmable graphing calculator designed for advanced mathematics, science, and educational use. With over 2,100 functions, a high-contrast dot matrix display, and a wide range of graphing and statistical tools, it provides both students and professionals with reliable performance for complex calculations.

Key Features

• Programmable & Graphing Calculator with over 2,100 built-in functions

• 10 + 2 Digit Display with dot matrix screen and icon-based menu system

• Comprehensive Graphing Tools: Rectangular, polar, parametric, inequality, conic, and integration graphs

• Advanced Calculations: Differential, integration, complex numbers, logarithmic, trigonometric, exponential, GCD/LCM, and random number generation

• Statistical Tools: Basic, intermediate, regression, and graphical statistics with a STAT-data editor

• Financial Functions: Compound interest and day calculation modes

• Program Functions: BASIC-like programming with up to 20,000 bytes of memory

• Connectivity: Supports PC and calculator-to-calculator connections

Specifications

Basic Information

• Type: Programmable, Graphing

• Number of Functions: 2,100+

• Digits: 10 + 2

• Display: Dot matrix LCD with icon menu

• Keys: Plastic

Key Functions

• Negative Sign

• Power Off

Memory

• 9 Variables

• Answer Memory

• Reset Function

• Program Capacity: 20,000 bytes

Power

• Supply: 4 × AAA batteries

• Battery Life: Approx. 230 hours

• Auto Power Off: Yes

Dimensions & Weight

• Size (D × W × H): 175.5 × 83.5 × 18.7 mm

• Weight: 190 g

• Accessories: Hard Case

Display Settings

• Number Formats: Fix, Sci, Norm

• Engineering Symbols & Notation

Calculation Functions

Basic:

• Arithmetic, Brackets, Fractions, Reciprocal, Percentages

• Factorials, π, Square Root, Rounding

• Degree / Minute / Second (Sexagesimal)

Advanced:

• Transcendental number e

• Power & Root Functions (square, cube, nth root)

• Trigonometric & Inverse Trigonometric

• Hyperbolic & Inverse Hyperbolic

• Exponential & Logarithmic (base 10 & custom)

• Coordinate Conversion

• Combination & Permutation

• GCD/LCM, Integer Part Function

• Complex Numbers

• Differential & Integration

• Base-n Calculations & Logical Operators

• Random Number & Random Integer Generation

• Summation

Applied:

• Multi-statement & Output Commands (: / ◢)

• Continuous Calculation

• Replay & Multi-Replay

• Copy & Paste

• SOLVE Function

Financial:

• Compound Interest Calculations

• Day Calculations

Statistical Functions

• List-Based STAT Data Editor

• Basic & Intermediate Statistics

• Regression & Distribution Calculations

• Statistical Graphs: scatter, line, histogram, box plot, etc.

Graphing Functions

• Rectangular, Polar, and Parametric Graphing

• Inequality Graphing

• Domain/Range Graphs

• Integration Graphs

• Trace & Zoom Tools (box zoom, in/out, auto zoom)

• Solve (roots, min/max, intersections, integration)

• Sketch Tools (tangent, normal, inverse function)

• Dual Graphs (table + graph, or graph + graph)

Programming Functions

• BASIC-like Programming Support

• 20,000 bytes of memory capacity

Connectivity

• Connection to another calculator

• Connection to PC

✨ The Casio fx-7400GIII delivers strong performance with a balance of programmability, advanced graphing, and statistical functions—ideal for students in high school, college, and technical fields.