What is a Scientific Calculator?

Functional calculator (also called "scientific calculator") is a general term for a class of calculators with elementary function numerical calculation functions . It is the most commonly used type of calculator . Due to different manufacturers and models, they have different calculation functions. They are often used for general numerical function calculations in science and engineering or engineering. They do not have programming, text storage, high-precision operations and symbolic operations, and drawing functions.

Function calculator

Functional calculator (also called "scientific calculator") is a general term for a class of calculators with elementary function numerical calculation functions . It is the most commonly used type of calculator . Different calculation functions due to different manufacturers, models, etc. The general level is equipped with elementary function calculation functions and statistics, regression analysis and other functions, and the higher level is equipped with numerical calculus, numerical summation or multiplication, and base conversion And bit operation, scientific constant, unit conversion, matrix, vector, solve equation (group), solve inequality, probability distribution, relationship proof and other functions. It is often used for general numerical function calculations in science and engineering or practical engineering. It does not have functions such as programming, text storage, high-precision operations and symbolic operations, and drawing.

In the world, there are only four major manufacturers that independently develop and produce calculators: CASIO, Texas Instruments, Hewlett-Packard (HP), and Sharp (sharp). The function calculators outside these four are counterfeit , Cottage or piracy. Among these four major manufacturers, the scientific scientific calculators produced by Casio are the most popular. At present, the CLASSWIZ series scientific scientific calculators produced by Casio are at the highest level. The domestic flagship model is CASIO fx-991CNX, which is rich Calculation function, and has a Chinese menu, suitable for students in high schools and colleges, and can be used in tests that require no programming and no storage functions. In addition, Casio's fx-991ESPLUS and Texas Instruments' TI-36XPro are also popular advanced functional scientific calculators. In addition, there are some models suitable for junior high school students, such as Casio's fx-82ESPLUSA, fx-82CNX, and so on.

The basic function calculation function of the function calculator is generally input through the keys on the panel. Due to the large number of functions, some need to be called through the second function key (such as SHIFT, ALPHA, 2nd, etc.). Scientific calculators currently on the market generally use VPAM (Visual Perfect Algebraic Method) for input, and most of them have the function of natural writing input, that is, inputting according to the habit of people writing mathematical formulas on paper.

Functional scientific calculators produced in China need to comply with the relevant provisions in the National Standard of the People's Republic of China GB / T 4967-1995 "General Technical Conditions for Electronic Calculators" ^[1] .