An electronic calculator is a portable and digital device used for mathematical calculations. There are several synonyms for this device, including digital calculator, scientific calculator, pocket calculator, and graphing calculator. A digital calculator describes the device's ability to perform arithmetic operations using electronic circuitry, while a scientific calculator refers to a more advanced device capable of trigonometric and logarithmic calculations. A pocket calculator is a smaller version of the device designed for convenient and compact use, and a graphing calculator enables the visualization of mathematical graphs and charts. These synonyms illustrate the versatility and importance of electronic calculators in academic and professional settings.