For Casio Graphic Calculators

Bugs and Stupid Features

Bugs

On some 7000 models typing the standard deviation function ysn-1 results in the symbol xsn-1 appearing on screen. However it still calculates ysn-1 fortunately.

In the 9700 manual it says that the function-memory can be used in all modes except base-n. But in fact it can't be used with the file-editor either.

On the 9700 you can type i*Mat A[1,1] which means i times the top-left element of matrix A. However if you store this in function-memory f1 and try to use f1 in a program then it comes up with a arg error.

Stupid Features

On early models such as the 7000 the keyboard buttons were overloaded with several functions which meant that when you were in some modes (stats for example) then programming functions (like Isz, Dsz) were unavailable.

The 6300 is the budget model with the tiny screen. The problem is this means there is only one display line, so if you are displaying a series of numbers then you can't tell when a new number has appeared if it is the same as the last one. e.g.

1_ 3_ 3_ 1_  will seem like 1_ 3_ 1_
To get round this put soem intermediate text like a comma to be
displayed inbetween each number
i.e. 1_ ","_  3_  ","_  3_  ","_  1_
and now you can see what is really happening.

Equality tests don't work with matrices

e.g. If Mat A=Mat B will cause an error

Weird Graphics Behaviour

The plot command is designed to be used in pairs to join a line. e.g. Plot 1,1:Plot 2,2: Line. If you just try to plot a single point it won't execute until the next graphics command is reached in the program listing. You could force it to display a single point by repeating the same point twice. e.g. Plot 1,1:Plot 1,1 or on later models use the PlotOn command instead.

On the early 9850G models the Plot command if used just prior to a Text command. e.g. Plot 1,1: Text 10,10,"HELLO" will plot a point just above and to the right of "HELLO" instead of at 1,1.

On the early 9850G models the Text command won't display anything until the next graphics command is reached. You can force it to display by adding PxlTest 1,1 or Text 1,1,"" each time you use Text.

For more info on bugs and stupid features see Tom Lynn's Encyclopaedia.