Learning Resources 991ES Scientific Calculator with LCD Writing Tablet, White

Scientific Calculator with LCD Writing Tablet

The Learning Resources 991ES combines a 417-function scientific calculator with an integrated LCD writing tablet and stylus. A four-line display shows multiple calculations at once. Dual power uses a rechargeable lithium-ion cell and a replaceable coin battery. The white plastic body measures 16 x 8 x 0.1 centimeters.

Students and Professionals Needing Combined

This device suits anyone who wants to write working steps directly beside the numbers on a single desktop unit. The lock key must be unlocked before the writing area or erase button function. Buyers who require a standalone graphing calculator or a separate dedicated notepad should consider other options.

417 Built-In Functions Covering Math.

The function count determines whether the calculator handles the specific topics a course or job demands. The list includes base-n logic, complex numbers, matrices, vectors, equation solving and table mode. If a syllabus requires more or fewer functions, the 991ES may not match the requirement.