Electronic calculators are devices that can perform mathematical operations with the use of electronic circuits. These devices are commonly known as calculators, but there are various synonyms that can be used to refer to them. Some of the synonyms commonly used for electronic calculators are digital calculators, pocket calculators, scientific calculators, financial calculators, graphing calculators, and programmable calculators. Digital calculators are basic calculators used for simple arithmetic operations, whereas scientific calculators are used for complex mathematical operations. Financial calculators can perform financial calculations, and graphing calculators are used for advanced mathematics such as calculus and geometry. Lastly, programmable calculators are calculators that can be programmed to perform various functions and equations.