Natural-V.P.A.M. Scientific Calculator

A Campus+ recreation of the fx-991ES PLUS 2nd edition's physical arrangement, with textbook fractions and roots, a movable cursor, replay history, and eight calculator modes. Calculations stay on-device.

Apps on this unit

COMP — exact fractions, trig, calculus
CMPLX — rectangular / polar arithmetic
STAT — data and regression tools
BASE-N — binary, octal, decimal, hex
EQN — polynomial / simultaneous systems
MATRIX — dimensions, products, inverse
TABLE — evaluate functions over ranges
VECTOR — magnitude, dot, cross products

Quick keys

MODE selects COMP, CMPLX, STAT, BASE-N, EQN, MATRIX, TABLE or VECTOR.
SHIFT + MODE opens setup · ALPHA + letter inserts variables.
▲▼ replays history · S⇔D toggles fraction ⇔ decimal.
CALC evaluates with current variable values · ∫ opens an integral template.
Keyboard: digits/operators, Enter, arrows, Backspace, Esc.

Independently built by Campus+ as an fx-991ES PLUS-style recreation; not affiliated with or endorsed by Casio. Calculations and saved state stay in your browser.