Scientific calculator, also known as function calculator, is an electronic calculator, which can perform power, root, exponent, logarithm, trigonometric function, statistics and other operations. It has all the ordinary functions, and all the functions are distributed on the keyboard, so that you can use them without going through the menu list.
Support 24-bit digital display, operation priority mode, decimal conversion function, standard mathematical function and other functions. Specify index range, decimal point setting, engineering calculation and effective number setting. If the calculator is in the other three states, an operation error may occur.
Structure composition of calculator
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. The display is the output part of the calculator, including LED display or LCD display.