Set of 2 Texas Instruments TI-34 calculator Scientific Casio percentage

Description of the Image The image displays a close-up of a Texas Instruments TI-34 calculator. The calculator is primarily black with gray and red buttons. The display screen at the top shows the number '0'. The buttons are labeled with various mathematical functions, including trigonometric functions, logarithms, and basic arithmetic operations. Some of the button labels are faded or partially obscured.