Casio MS-20F

Adam Riese would be delighted. Who doesn't know it? Whether for year-end accounting, for invoicing, or simply to calculate a percentage in between: a pocket or desk calculator is essential in every office. These calculating machines are much more practical than a calculator window on a computer. The large, easy-to-use buttons allow experienced users to type quickly and even blindfolded. The display of the model is large enough to show twelve digits. The tiltable display ensures that the entered numbers are always easy to read. The calculator operates using a combination of solar and battery power. In bright lighting conditions, the solar cells provide the necessary energy. Conversely, when it’s darker, the batteries take over.