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.