He stared at the calculator.

The roman numeral (2) is critical. The original TI-Nspire CX (first generation) lacks the "II" designation. Confusion may arise because:

Alex stared. He looked around. No one was watching. He whispered, “What?”

Some drafting programs use:

Unlike standard calculators, this model can solve algebraic equations symbolically (e.g., it can provide or solve for as a formula). High-Resolution Display:



ti cx ii cas