Recommended models for function type: fx-991CN X, x-82CN X, and fx-82ES PLUS A
 
Recommended graphics models: fx-CG50, fx-CG20CN   
 
Recommended programmatic models: fx-5800P, fx-9860GII SD, fx-9750GII
 
Recommended models for desktop type: DH-120, MY-120, DW-200TW, DS-2B
 
Recommended model for financial type: FC - 200V
 
Quite a few people have Casio calculators involved in their school days. As a classic old brand in the industry, its sales and reputation have been in a leading position, in the development of decades of enterprises, the launch of the world's first small electric calculator, the first software-programmable desktop electronic calculator and the world's first personal calculator, can be said to be the promoter of the history of calculators.
 
The core of the computer product is the internal chip, which uses large-scale integrated circuits to arrange the memory, combinator and other modules on the chip. The basic calculator uses a digital logic circuit to realize the serial operation of each module, and its random memory has only one or two units. Complex calculators are composed of microprocessors and read-only memory to implement a variety of complex computing programs, and there are many random memory units. At that time, the fierce computer war between the United States and Japan was the battle of chips for various brands, and Casio survived the competition by virtue of its own R&D strength, and it was also one of the few brands that still had the R&D capabilities of computer chips.
 
At present, Casio pays relatively attention to the mid-to-high-end market, focusing on professional scientific fields, while taking into account the basic office and commercial needs. The product range is the most comprehensive of all the brands on the list, covering the possible application environment, and firmly holding the majority of the calculator market share.
 
The dominant product is the Function Science series of calculators. Compared with the previous generation FX-82CN X, the latest FX-991CN X uses a packaged CY-239 chip inside, which greatly improves the computing speed. Through the summation calculation, at least 600 addition calculations per second can be performed inside the chip. At the same time, the calculation mode has been increased, which can be applied to most science and engineering calculations. The price is 148 yuan, which is one notch higher than the fx-82CN X, which is at a high level in the functional calculator, if you consider long-term use and want the quality to be guaranteed, the fx-991CN X is still worth buying.
 
The programming engineering calculator is a brand professional line product, including fx-5800P, fx-GII series, suitable for surveying and mapping, civil engineering, construction and other industry applications, the price starts from 100 yuan to 1,000 yuan, at a high level. There are only a handful of brands that sell these calculator chips, which are designed to handle complex calculations and be able to handle complex calculations and install professional programs such as Road Star.
 
Among the graphing calculators, the fx-CG series is currently the most complete function in Casio, with a price between 1300-1500 yuan, supporting BASIC-like programming language and 3Pin data communication. Compared with Texas Instruments' graphing calculator, the built-in application and official plug-in of the system support Chinese display, which is more user-friendly. The disadvantage is that although 20MB of flash memory is installed, the actual read and write speed is only a few tens of KB/s.
 
The financial FC-200V is priced at 309 yuan, which is not a designated machine for related exams, and can only be used for daily work and study. The desktop calculator is guaranteed in quality under the halo of the Casio brand, priced between 50 and 120 yuan, compared with domestic affordable products, it is cost-effective, and is suitable for users with a loose budget and more emphasis on quality.