Step 2: Enter the number that needs to be multiplied.

Step 3: Then press the button on the calculator.

Step 4: Then enter the number that needs to be improved several times. Here, take the quadratic as an example and enter "2".

Step 5: Then click the equal sign, and the second power of 2 is calculated.

Extended data

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. In addition to displaying the calculation results, there are often overflow instructions, error instructions and so on.

The calculator is powered by an AC converter or a battery, which can be charged by an AC converter or a solar converter. In order to save electricity, the calculator is a large-scale integrated circuit (see complementary metal oxide semiconductor integrated circuit) made by CMOS process, which is equipped with an automatic power-off circuit and works irregularly. The peripheral equipment that the calculator can choose is a micro printer, a cassette player and a magnetic card player.

From a certain point of view, "computer" in a broad sense includes "electronic calculator". There are also integrated circuits in electronic calculators, but the calculator has simple functions, cheaper price, portability and good stability.

In the past, books such as abacus, Napier bone, mathematical table, engineering slide rule or mechanical adder played an auxiliary role in numerical calculation. The word calculator originally refers to a professional who does mathematical calculations with paper and pen. This semi-manual calculation is both heavy and error-prone.

Modern calculators are powered by electricity and come in all shapes and sizes, from cheap simple devices the size of credit cards to special calculators with printing functions.