FX-991EX Advanced Engineering Scientific Calculator - 552 Function Solar

Calculator Model: FX-991EX

Features at a Glance

The Series with High-Resolution LCD and Many Additional Features

The Series features a new high-resolution LCD display with 192 x 63 pixels, offering four times the resolution of the familiar FX-ES Plus Series displays. The new Series also boasts new hardware with a faster processor and twice the memory capacity.

Functions & General Information

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A spreadsheet function is included, allowing users to perform basic spreadsheet calculations on a scientific calculator for the first time. Furthermore, results can be viewed on a smartphone or tablet thanks to the newly available QR code1 function.

Detailed Specifications:

High-Resolution 192 x 63 Pixel LCD Display

Natural V.P.A.M. - Natural Display

552 Functions

Icon Menu

Spreadsheet

QR Code Function1

Solving Equations and Systems with Up to Four Equations

4x4 Matrices

Vector Calculations

Integration Calculations

Differential Calculations

Probability Distribution

Calculations with Technical Symbols

Undo Function

Complex Number Calculations

Base N Calculations

Equation Calculations

Inequality Calculations

Sum Calculations

47 Knowledge-Based Constants

40 Metrixc Conversions

Automatic Parentheses

24 Parenthesis Levels

Variable Memory (9)

Trigonometric and Inverse Trigonometric Functions

Hyperbolic and Inverse Hyperbolic Functions

Power/Power Root Calculations

Logarithmic Calculations

Exponential Calculations

Root Calculations

Combinatorics and Permutations

Prime Factorization

Random Integer

Polar Coordinate Conversion to Rectangular Coordinates and Inverse

Fraction Calculations (Two Modes)

Sexagesimal Conversion to Decimal and Inverse

Calculations in Degrees, Degrees, and Radians

SCI/FIX/ENG Function

List-Based Statistics

1-Variable Statistics

Standard Deviation

2-Variable Statistics (Regressions)

Percentage Calculation

Non-Natural Inputs

Output in √-Form

Output in Π-Form

Function Table

General Information

552 Functions

Display: "Natural Textbook Display" Natural V.P.A.M.

High-resolution LCD display, 63 x 192 pixels, 16/10 + 2 digits

Power supply: Solar + battery (1 x CR2025)

Comes with a new sliding hard case

Dimensions (H x W x L): 77 x 165.5 x 11.1 mm

Weight: 90 g

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On Apr 13, 2026 at 23:44:20 PDT, seller added the following information: