Engineering instrument

fx-991EX ClassWiz scientific calculator, highlighting its high-resolution display and advanced features.

On the left, it shows the physical calculator: a black handheld model with a textured cover, multi-line high-resolution LCD screen (demonstrating a statistical mean calculation from data points D1:D40), a full scientific keyboard with function keys, trigonometric buttons, and navigation controls.

Prominently displayed at the top right is “10+2 DIGITS”, referring to its internal precision (10-digit mantissa + 2-digit exponent).

Smaller inset screenshots illustrate key capabilities enabled by the high-resolution screen:

•  Spreadsheet calculations (showing a grid with data and formulas)

•  Matrix calculations (displaying a matrix entry screen)

•  Equation calculations (showing a complex inequality or expression)

•  Multiline display (statistical summary screen)

A bulleted list of advanced features includes:

•  Vector calculations

•  Multiline display

•  Integration calculations

•  Differential calculations

•  Advanced statistical distribution calculations

•  Ratio calculations

•  Metric conversions

•  Scientific constants

•  Variables list

•  Statistics list

•  Digit separator

•  Engineering symbols

•  Inequality calculations

Overall, the image advertises the fx-991EX as a powerful non-programmable scientific calculator ideal for high school and university-level math, engineering, and science, with unique features like basic spreadsheet functionality, 4x4 matrix support, vector operations, numeric integration/differentiation