Scientific Calculator Eleven SR270XE — basic scientific functions, portable handheld

Eleven SR270XE is a portable scientific calculator designed for general scientific and educational use. It delivers essential scientific functions for arithmetic, exponents, roots and trigonometry in a compact handheld form factor. The device is intended for students, teachers and professionals who need a reliable tool for exams, homework and everyday calculations, combining straightforward operation with a focus on the core functions required in classroom and office environments.

Advantages

The Eleven SR270XE offers a compact design and a clear numeric display that facilitate quick numeric entry and result reading. It supports a standard set of scientific functions — including exponentiation, root extraction and trigonometric calculations — while maintaining an intuitive keypad layout for efficient data input. Low weight and portable dimensions make it convenient to carry between classes or meetings, and its battery-powered operation ensures consistent use without external power sources.

Suitable for

• High school and university students during lessons and exams
• Teachers preparing exercises and checking calculations
• Engineers and technicians requiring basic scientific computations
• Everyday arithmetic and financial estimations that require scientific functions

Key specifications

• Function set: arithmetic, exponentiation, root extraction, trigonometric functions, basic statistical operations
• Display: multi-digit numeric display suitable for scientific notation and decimal results
• Input: tactile keypad with clearly labelled scientific keys
• Power: battery operation for portable use
• Size and weight: compact handheld dimensions and low weight for easy portability

How to use

Turn on the calculator using the power key and enter numbers via the numeric keypad. Use the dedicated function keys for exponentiation, roots and trigonometry; select degrees or radians mode where applicable before performing angle calculations. For multi-step calculations, enter expressions in the required sequence and use the memory or clear keys to manage intermediate results. Switch off when not in use to conserve battery life.

Usage recommendations

For reliable performance during exams or extended use, keep spare batteries available and protect the calculator from impacts and moisture. Verify the calculator mode (degrees/radians) before trigonometric computations and use parentheses for complex expressions to ensure correct operation order.