Expression limits for three calcs, please

[Marcus von Cube]

For the Casio it's in the User's Guide on page E-11:

Quote:Number of Input Characters (Bytes)

You can input up to 99 bytes of data for a single expression.
Basically, each key operation uses up one byte. A function that
requires two key operations to input (like (Shift), (sin), (sin^–1)) also uses
only one byte. Note, however, that when you are inputting functions
with Math format, each item you input uses up more than one
byte. For more information, see “Inputting with Math Format”

The limit is the size of the input buffer.

For the other calculators the limits are very likely to be similar.