Calculator 991es plus version E
textbook synchronous display, tabular statistics and 10 position radix + 2 position exponent. Used for scientific calculation, ie function calculation.
Multi-step reappear, dotmatrix display and plastic buttons. Touch keyboard, easy to click.
Multi-function mathematical calculator: it can be used to calculate advanced functions.
High quality material: durable, stable and responsive. Designed for students and office workers.
Upgrade motherboard: more stable work. It can help you solve problems you encounter in your study, convenient to calculate