How to distinguish a real calculator from a fake? You should know the features of a high-quality calculator. The choice of calculator is also depends on the type of food.
An original reference point in the history of calculators is the year 1957, when CASIO developed a prototype of a fully pilot electronic compact calculator 14-A. Soon, Anita calculator appeared which was produced by Bell. The era of total calculatorization began in the West in 1961, which was marked by the establishment of a large-scale production of electronic calculators. However, you can visit era calculator for the best usage now.
- To choose an excellent calculator model, it is worth giving preference to well-known manufacturers. Counterfeit calculators are characterized by low quality characterization on buttons. It is also necessary to check the clarity of the image, the speed and quality of the output of all characters on the indicator.
- The presence of a keyboard creak is unacceptable, which is checked by pressing a couple of buttons. Look at the window for light power, often it does not work in fakes. Irregular edges, fuzzy printing on buttons, as well as cheap material that is used to manufacture the case and keys are unacceptable.
Pay attention to indicators for bit depth, power, buttons, display and case. This is the only way to choose an excellent model that will please you with long-term operation. By digit means the number of digits that are displayed. Typically, these are eight, ten, twelve, or fourteen …