A scientific calculator is placed on top of a desk alongside a textbook and some notes. The calculator display shows some trigonometric calculations. The textbook page features a diagram explaining the concept of reflection, with terms like angle of incidence and angle of reflection. The surroundings contain other academic materials, suggesting a study environment.
Close-up view of a calculator with numerous buttons, including numbers, arithmetic operations, and special functions like EXP and EXE. The keys are dark in color, with white labels, and the surface has a slightly worn appearance.
A simple electronic calculator with a large digital display at the top, featuring various mathematical function buttons such as addition, subtraction, multiplication, division, along with memory keys and special function keys. The numeric keypad is prominently displayed with numbers zero through nine.