FX-7000G/FX-7000GA
IntroducedOctober 1985
Discontinued1988
Calculator
Entry modeInfix
Precision13 digits
Display type
Display size96 × 64 pixels/8 * 16 characters
Programming
Memory register26 numbers
78 numbers (maximum)
Program steps422 bytes
Other
Power supply3 × CR2032 Lithium
Dimensions165 mm × 89 mm × 15 mm (6.5 in × 3.5 in × 0.6 in)

The Casio FX-7000G is a calculator which is widely known as being the world's first graphing calculator available to the public. It was introduced to the public and later manufactured between 1985 and c. 1988.[1] Notable features are its ability to graph functions,[2] and that it is programmable. The calculator offers 82 scientific functions and is capable of manual computation for basic arithmetic problems.[3]

Casio Fx 9900gc Manual Arts
  • 1Features
  • 2Display and Exterior

Features[edit]

Casio invented the graphing calculator. No, it wasn't Hewlett-Packard; much to my surprise, I found out that Casio's first graphing model, the fx-7000G, preceded HP's first graphing machines by at least a year or more. Unfortunately, like so many other Casio models, the fx-7000G is, well, uninspiring. 'TRAINING' edition (in development) is dedicated to the airlines, wishing to have a good quality. Casio Fx 9900gc Manual Muscle Archive.

Mathematical[edit]

The calculator can compute basic arithmetic functions with a precision up to 13 digits.[1] Many functions integrated into the calculator include arithmetic and algebraic computations such as:

  • trig functions[3]

Other specialized functions also implemented into the calculator include hyperbolic and statistical functions, binary/octal/hexadecimal/sexagesimal conversions and graph plotting.[4]

Programming[edit]

Like many Casio calculators, the FX-7000G includes a programming mode,[2] in addition to its display and graphing mode. It holds 422 bytes of programming memory,[5] less than half a kilobyte. However the calculator does allow for expanded/additional memory by a method of reducing the number of steps within a program. This is done by optimizing the number of steps a program has to fill a single unit of memory, instead of several.[3] The user may save any program they create or are in the process of creating in one of ten programming slots,[6] a feature also used in the Casio BASIC handheld computer.

The calculator uses a tokenized programming language (similar to the earlier FX-602P) which is well suited to writing more complex programs, as memory efficiency is a priority. Tokenization is performed by using characters and symbols in place of long lines of code to minimize the amount of memory being used. The User Manual programming catalog is written in these symbols,[6] allowing for lengthier programs to be written with less effort and less memory. One example is a program which estimates a definite integral through the use of Simpson's Rule; this can be found within the user manual for reference.[6]

The calculator has 26 numeric memories as standard. Additional memories can be created by reducing the number of bytes available for programs. Using this facility allows a total of 78 memories maximum.

Graphing[edit]

The calculator has a built in graphing feature which is unique to its model. The calculator can display either built-in graphs that are already programmed or display a user defined graph.[7] The user also has the option to rewrite any of the previously programmed graphs.[7]
Statistical graphs can also be generated: bar graphs, line graphs, normal distribution curves, regression lines.[5]

Display and Exterior[edit]

Display[edit]

The FX-7000G incorporates an LCDDot Matrix design via the display window. When set into character mode the calculator can display up to sixteen characters on each of its eight display lines.[3] This sixteen character by eight line display is screened on the 96 × 64 dot matrix.[3] The LCD is not capable of colour or grey scale display.

Exterior[edit]

A black casing surrounds the calculator along with a metal panel implemented on the rear; a large plastic screen protects the LCD display window as well. Keys are labeled and printed on orange, green, blue, red, and black malleable buttons.[1]

Measurements[edit]

The calculator's dimensions (width, height, depth) are 83.5 mm × 167 mm × 14 mm (3.29 in × 6.57 in × 0.55 in). It has an approximate mass of 155.5 g (5.49 oz) including batteries.[1]

Power[edit]

The Casio Fx-7000G needs a 9.0 volt DC currentlithium battery supply provided by 3 CR2032 type cells. The calculator does not accept an AC adapter and only uses batteries. The average battery life is around 120 hours which is shorter in length compared to similar models.[1]

  • The power-on switch is a small slider half-way up the left-hand side.

  • The lower keys have the traditional Casio layout. The EXE key would execute the sum on the keyboard. The Ans key could be used to represent the last answer; simple iterative functions could be built up.

  • The upper keyboard has the main function keys. The SHIFT and ALPHA keys are used to access the many different functions each key could be.

  • The power-on screen displays system mode, calculation mode, angle unit and rounding. These could be changed by pressing the MODE button, or SHIFT then MODE buttons, as shown on the writing below the screen.

See also[edit]

References[edit]

  1. ^ abcde'Vintage Technology'.
  2. ^ ab'Manual: Chapter 4'(PDF). Archived from the original(PDF) on 2003-12-16.
  3. ^ abcde'Manual: Chapter 1'(PDF). Archived from the original(PDF) on 2004-06-15.
  4. ^'Manual: Chapter 2'(PDF). Archived from the original(PDF) on 2005-12-16.
  5. ^ ab'fx-7000G Owner's Manual: Specifications'.Missing or empty url= (help)
  6. ^ abc'Manual: Chapter 5'(PDF). Archived from the original(PDF) on 2003-12-17.
  7. ^ ab'Manual: Chapter 3'(PDF). Archived from the original(PDF) on 2003-12-16.

External links[edit]

  • Casio FX-7000g Page on ledudu's casio library
  • Manual in pdf at the Wayback Machine (archived May 9, 2013)
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Casio_fx-7000G&oldid=926377167'
Casio Algebra FX 2.0 Plus
A graphic calculator from Casio, the Casio Algebra FX 2.0 Plus
Type
ManufacturerCasio
Introduced2001
Calculator
Entry modeInfix
Display type
Display size128×64 dots
Programming
Programming language(s)BASIC-like
User memory144 kibibyte RAM, 768 kibibyte Flash
Other
Power supplyfour AAAalkaline batteries
Weight213 gram

Graphic calculators made by Casio include the touchscreen ClassPad 300 as well as the models with traditional buttons which can be divided into two main generations listed below.Casio produced the world's first graphing calculator, the fx-7000G.

  • 1First Generation
  • 2Second Generation
  • 3Programming

First Generation[edit]

Original Series[edit]

Casio fx-8000G

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)[edit]

Around 1990, the Power Graphic series introduced: F1 through F6 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;Models: fx-7700G, fx-7700GB, fx-8700G, fx-8700GB. The GB models have a communications port.(French versions: fx-7800G, fx-7800GC, fx-8800G, fx-8800GC).

Also made was the low-end fx-6300G (French: fx-6800G) with a smaller screen and fewer features, and the fx-6200G which didn't have any programming facility.

Icon Menu Power Graphic series (1993)[edit]

Around 1993, the Icon Menu Power Graphic series introduced: An icon-driven menu interface, further increasing ease of use, numerical differentiation; matrices in programs; and an equation solver. Models: fx-7700GE, later renamed fx-7700GH.(French version: fx-7900GC)

Business

Additionally there were models with 24K memory which introduced: dynamic graphing; complex numbers; table mode; more advanced equation solver; larger matrices (255x255); sigma calculations; graph solver for roots, intercepts, max and mins. These include the fx-9700GE, later renamed fx-9700GH (wider screen) and the CFX-9800G (3-color screen).(French versions: fx-9900GC, CFX-9900GC)

Also made with an icon menu but none of the above features was the fx-7300G (French: fx-6900G).

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Second Generation[edit]

9850 series (9750/9850/9950/9970)[edit]

Casio CFX-9850GB Plus
Casio CFX-9850GB Plus
Type
ManufacturerCasio
Introduced1998
Calculator
Entry modeInfix
Display type
Display size128×64 dots
Programming
Programming language(s)BASIC-like
User memory32 kibibyte
Other
Power supplyfour AAAalkaline batteries
Weight190 gram

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 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.

(French versions: 9750=Graph 30,35,fx-8930GT; 9850,9950=Graph 60,65,CFX-9930GT,9940,9960; 9970=Graph 80)

7400 Series[edit]

First made in the year 1996, this series is like a cut-down version of the 9850 series. For instance it does not have the commands Getkey, Locate, Text or matrices or complex numbers, and the screen is smaller.

Models: fx-7400G, fx-7400G Plus, fx-7450G, fx-7400G Plus GY (French versions: fx-6910G, Graph 20, Graph 25)

Algebra FX series[edit]

First made in the year 1999, these have flash memory which provides larger capacity than previous models, however due to the short lifespan of the original flash memory used, these calculators stop working after a few years. Casio has stated that this problem has been fixed. The Algebra FX 2.0 versions have symbolic algebra, while the FX 1.0 versions do not. There are community written tools for accessing the ROM-DOS operating system thus allowing C and Pascal compilers to be used.

Models: Algebra FX 2.0, FX 1.0, Algebra FX 2.0 Plus, FX 1.0 Plus (French versions: Graph 100, Graph 100+)

9860 G/GII series[edit]

First made in the year 2005, the 9860 models are much faster than previous models and can be programmed in C/C++ using the official software development kit.

In 2009 the GII models were produced along with a corresponding OS update for the original 9860G, with new functions gcd/lcm/mod, random integer, units conversion, string functions, and new probability and inverse probability distributions available within programs. The 9860G OS update was not absolutely identical to an actual 9860GII model.

The fx-9860G Slim and fx-9860GII have a backlight display.

Models: fx-9860G, fx-9860G SD, fx-9860G Slim, fx-9860GII, fx-9860GII SD, fx-9750GII, fx-7400GII (French versions: Graph 85, Graph 85 SD, Graph 85 Slim, Graph 75, Graph 95, Graph 35+ USB, Graph 25+ Pro)

Australia only: fx-9860G AU, fx-9860G AU Plus

The fx-9750GII and fx-7400GII are low-budget versions with restricted OS functionality. Also, 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 latter Operating System offering more features particularly pretty printed equations and Vector arithmetic. This is not supported by Casio.

fx-CG Prizm series[edit]

Announced for January 2011, these models have a high-resolution color display (396x224 screen with 384x216 pixels (21x8 characters) window[1] with 216 colors), a USB 2.0 port, 16 MB of flash memory and a feature called Picture Plot.[2] The Prizm is permitted on all major standardized tests including ACT, SAT, AP, GCSE and GCE examinations.[3] 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.[4] SD card slot is no longer available. The processor is based on a custom Renesas SH4-A family SH7305 CPU.[5]

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

Although no official SDK has been released yet, several community SDKs exist using either some of the fx-9860G SDK tools or parts of the GNU toolchain.[6] The Prizm Mini-SDK originally required Casio fx-9860 SDK to function,[7] which was later replaced by PrizmSDK.[8]

  • Models: fx-CG10 (North America), fx-CG20 (other regions)
  • Australia models: fx-CG20 AU
  • China models: fx-CG20 CN

Programming[edit]

Casio graphic calculators use a BASIC-like programming language but variable names are restricted to single letters A-Z which are shared by all programs including subroutines which are stored as separate programs. This means there are no local variables, they are all global. These variables are also shared by other functions of the calculator. For example, drawing a graph will overwrite the X and Y values.

First generation programming language[edit]

Loops are constructed by incrementing or decrementing the value of a variable with the Isz and Dsz commands in conjunction with the Lbl and Goto commands, rather than using simpler For or While commands. Arrays are achieved by overwriting other letters, for example A[0]=A, A[1]=B, A[2]=C. The available space for arrays can be extended with the Defm command so that Z[1], Z[2] etc. can be used depending on how much unused memory capacity is available.

Second generation programming language[edit]

Compared to the first generation models these have many more commands including: For and While Loops, If. Then structures and the ability for real-time user interaction with the Getkey command and the ability to place characters anywhere on the screen with the Locate and Text commands. Also the method for using array variables was changed to using lists and matrices.

Games[edit]

Some of the more recent Casio calculators have come with software that allows the user to link the computer to the calculator, download games already written for the calculators or code their own games and then have the software sync it to the device, from here the user can open up the games on the calculator and play them; all of the games are coded by the community and so feature copies of popular games that could be recoded to work on the device for example Tetris, Pong and Snake; more complex games can also be coded, however there is a size limit to what specific calculators can hold.

References[edit]

  1. ^Prizm display resolution different than 384×216 pixels ?
  2. ^fx-CG series - Products - CASIO WEW Worldwide EducationArchived October 12, 2010, at the Wayback Machine
  3. ^Casio Prizm fx-CG10 Review
  4. ^Fx-cg10 Vs. Fx-cg20 Prizm Versions.
  5. ^Technical Info
  6. ^Casio Prizm SDKs made by the community
  7. ^Prizm C Development
  8. ^Casio Prizm SDKs made by the community

External links[edit]

Retrieved from 'https://en.wikipedia.org/w/index.php?title=Casio_graphic_calculators&oldid=936218585'

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