Casio graphic calculators
Casio has produced the world's first graphing calculator, the fx-7000G. From then, the company has released many more graphic calculators, with the FX-CG100 being the newest.
First generation
Original series
First produced in 1985, these include the fx-7000G, fx-6000G, fx-6500G, fx-7200G, fx-7500G, fx-8000G, fx-8500G.Power Graphic series (1990)
The Power Graphic series introduced shortcut keys which enabled significantly greater ease of use; polar, parametric and inequality graphs; box and factor zoom; multiple graph scrolling; range initialization; integration; matrix mode; fractions; permutations, combinations, normal probabilities; SI unit symbols. The GB models have a communications port, using a serial cable to connect to a computer.Also made was the low-end fx-6300G, with a smaller screen and fewer features, and the fx-6200G, which was non-programmable.
Icon Menu Power Graphic series (1993)
Around 1993, the Icon Menu Power Graphic series introduced a new interface, using icons instead. New features would include:- Numerical differentiation;
- Matrices in programs
- Equation solving.
Second generation
9850 series (9750/9850/9950/9970)
First manufactured in 1996, there have been numerous variations of the CFX-9850G. The 9850 series models have 3-colour screens apart from the fx-9750G which is black and white. The 9950G has 64k memory compared to the 32k of the original 9850G. The 9970G has symbolic algebra. Later versions such as the Ga, GB and GC models fixed some bugs from the original G model and added some stats and finance features. The GB models have a built-in software library.7400 series
First made in 1996, this series is essentially a less advanced version of the 9850 series. For instance, it does not have the commands Getkey, Locate, Text or any matrices and complex capabilities. The screen is smaller.Algebra FX series
First made in 1999, these have flash memory which provides larger capacity than previous models, however due to the short lifespan of the original flash memory used, they would stop working after a few years. Casio since stated that the problem was resolved. The Algebra FX 2.0 versions have symbolic algebra, while the FX 1.0 versions lack this. There are for accessing the ROM-DOS operating system thus allowing C and Pascal compilers to be used.9860 G/GII series
First made in 2005, the 9860 models are much faster than previous models and can be programmed in C/C++ using the official .In 2009, the GII models were produced along with a corresponding OS update for the original 9860G, now containing features such as GCD, LCM, modulus operator, random integer generation, units conversion, string functions, and new probability and inverse probability distributions available within programs.
The fx-9860G Slim and fx-9860GII have a display backlight which can be turned on and off.
The fx-9750GII and fx-7400GII are low-budget versions with restricted OS functionality. The fx-7400GII does not have a USB 1.1 port.
The architecture of the 9750GII is similar to the 9860GII and therefore the former can be unofficially upgraded to the later Operating System offering more features particularly pretty printed equations and Vector arithmetic. This is not supported by Casio.
7400, 9750 and 9860 GIII series
The 7400, 9750 and 9860 GIII series was introduced in 2020 and includes a modern design language, increase in user memory for programming, support for implicit multiplication and a faster processor clock-speed and a MicroPython interpreter. The top-of-the-line 9860 GIII however, does not include a backlit display. The updated models also forgo the FA124 program used to connect the calculator to a computer, and can be connected directly as a flash storage device. Unlike the 9750 GII, the 9750 GIII sports the same feature set as the 9860 GIII with the only difference being the color scheme and the storage available to the user.Third generation
fx-CG Prizm series
Announced for January 2011, these models have a high-resolution color display, a USB 2.0 port, 16 MB of flash memory and a feature called Picture Plot. The Prizm is permitted on all major standardized tests including ACT, SAT, AP, GCSE and A-level examinations. The only known difference between the fx-CG10 and the fx-CG20 Prizm versions is that the fx-CG10 cannot open picture files that have been edited by users. The SD card slot is no longer available. The processor is based on a custom Renesas SH4-A family SH7305 CPU.Additional features over fx-9860GII include:
- Real time integration display
- Random sample in probability calculations
- Conditional format in spreadsheet
- Preloaded Picture Plot
- Preloaded Metric conversion
- USB connection to computer now treats calculator as mass storage device
An updated model, called the fx-CG50 or Graph 90+E in France, was released in January 2017 with a more modern design and a faster processor. The main menu screen has also been redesigned. Apart from that, it was very similar to the fx-CG10/20 upon release. Subsequent OS updates for the fx-CG50 have further differentiated it from its predecessors, for example the addition of a MicroPython interpreter.
Classwiz CG series
The Classwiz CG Series was announced by Casio at the National Council of Teachers of Mathematics conference at Chicago, United States in late September 2024. The Classwiz CG succeeds the fx-CG Prizm Series initially announced in 2011. The first model in the series, called the fx-CG100, retains the same power source as its predecessors instead of Li-ion batteries used by contemporary calculators and also adopts a USB C connector for connecting with a computer while retaining the 2.5 mm I/O connector for connecting to other calculators. The fx-CG100 also adopts a more uniform design language shared with Casio's Classwiz scientific calculators in order to make an easier transition to different models amongst the Classwiz series according to Casio. A big change as compared to the PRIZM series is the non-availability of Casio BASIC programming language in the new calculator instead relying on only Python for programming as well as a more simplified exam mode. Another major change in the keyboard layout is the removal of function keys and their replacement with the directional keys for accessing the menu system. The calculator also adopts the same menu based layout as the Classwiz CW scientific calculators.In France, the Classwiz CG Series was introduced in March 2024 with reduced functionality and is known as the Graph Math +. A non-programmable variant with a monochrome screen called the Graph Math Light was also introduced in the French market for exams where programmable calculators are not allowed.