Physical calculators, generally hand-held calculators, are convenient to carry and use, but generally speaking, their functions are relatively simple and it is not convenient to upgrade their functions. There are also some powerful hand-held calculators in the form of charts.
However, due to the most expensive price, it is not recommended to buy the most expensive multifunctional handheld calculator in the case of the popularity of tablet computers and smart phones.
Extended data:
Composition structure:
Calculator is generally composed of arithmetic unit, controller, memory, keyboard, display, power supply and some optional peripheral devices and electronic accessories, and is composed of manual or mechanical equipment. The arithmetic unit and controller of low-level calculator realize simple serial operation through digital logic circuit, and its random access memory has only one or two units for accumulation storage.
High-end calculator consists of microprocessor and read-only memory, and has many random storage units to store input programs and data. The keyboard is the input part of the calculator, generally using contact or induction. In order to reduce the size of the calculator, a key often has multiple functions.
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