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Specification
Title:	Osalo Scientific Calculator OS 991ES PLUS SE Black
Brand:	OSALO
Country of Origin	China
Number Of Digit	12 Digit
Material	Plastic
Equation Solver	Yes
Dimensions	162x80x14 mm

Summary

The Osalo OS-991ES PLUS SE Scientific Calculator processes engineering equations with 417 integrated functions. Under standard lighting, dual power circuitry draws from solar cells and a backup battery. With a black SE finish, this version updates the exterior from the previous grey model.

Key Features

417 Integrated Functions: Includes matrix, vector, and base-n calculation modes. Resolves complex numbers and variables.
Dual Power Source: Solar panel with LR44 battery backup system. Operates in low-light environments without interruption.
Natural Textbook Display: Renders mathematical expressions exactly as printed. Minimizes input errors during manual data entry.
Equation Solver: Computes simultaneous and polynomial equation results. Decreases time spent on iterative manual calculations.
162x80x14 mm Housing: Plastic construction with a slide-on hard case. Shields the internal circuitry from mechanical pressure.

Frequently Asked Questions

Is Osalo OS-991ES PLUS SE allowed in board exams?

Most educational boards permit non-programmable calculators with 417 functions. This unit meets requirements for an affordable scientific calculator for HSC students.

How many functions does Osalo 991ES PLUS SE have?

The device contains 417 built-in mathematical and scientific functions. It supports operations from basic arithmetic to regression analysis.

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Osalo Scientific Calculator OS 991ES PLUS SE Black

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