2020-9-16

The calculator is an electronic machine invented by modern people that can perform numerical operations.

Modern electronic calculators can carry out mathematical operations on handheld electronic devices. They have integrated circuit chips, but the structure is much simpler than computers. It can be said to be the first generation of electronic computers (computers), and the functions are weak, but it is more convenient. It is cheap and can be widely used in commercial transactions and is one of the necessary office supplies. In addition to displaying calculation results, there are often overflow indications, error indications, and the like. The calculator power supply uses an AC adapter or battery, and the battery can be recharged with an AC adapter or a solar energy converter. In order to save energy, the calculators are all LSI-made large-scale integrated circuits.