Casio FX-7700GB
I bought it in 1994 for my Trigonometry class. It has given me much insight into mathematical functions (as well as a few hours of entertainment.)
The picture is of a integration graph. It is of the equation f(x)=x^2-1 from 0
to 2.Specs:
Display: 96x64 pixel monochrome display; 16x8 character text mode.
Batteries: 3 Lithium CR2032 main batteries, 1 Lithium CR2032 backup battery.
Memory: 4,164 bytes.
Graph types:
- Rectangular
- Polar
- Parametric
- Inequality
- Integration
- Single-variable statistics
- Paired-variable regression line statistics
Casio CFX-9800G
I received this one Christmas Day 1995. It has been my calculator of choice since then. It has much more memory and many more graphic functions.
The picture on the right demonstrates the finding of the derivative of a function at a point. The left-right buttons control the orange cross.
The picture on the left shows the text mode of the CFX-9800G. What is displayed is Blackjack, the first program I created on the Casios (1994.) On the CFX-9800G, it is part of a larger games package.
Specs:
Display: 96x64 three-color display; 16x8 character text mode.
Batteries: 2 AAA main batteries, 1 Lithium CR2032 backup battery.
Memory: 24,000 bytes
Graph types:
- Rectangular
- Polar
- Parametric
- Inequality
- Integration
- Probability distribution
- Single-variable statistics
- Paired-variable regression line statistics
- Dynamic (animated) graphs
Programmming
I have been programming on the Casios since 1994. My first game was Blackjack. I completed that in October. Since then, I have been making games and whatnot. Some of the following I wish to share with you. They are black-and-white GIFs with the source code. If you have a CFX-9800G, you can insert a color before a quote, plot, or line command. Also, the small triangle denotes the variable display command, which is F5 under the Prog menu. If you encounter any problems, please send me an e-mail describing the problem.
