This is a user manual for CASIO fx-570ES PLUS fx-991ES PLUS calculators, which introduces its functions, features and usage methods.
This User's Guide covers the operation of the Casio fx-570ES PLUS and fx-991ES PLUS calculators. It includes instructions for initializing settings, adjusting display contrast, and navigating menus to specify various calculation modes such as COMP, CMPLX, STAT, BASE-N, EQN, MATRIX, TABLE, VECTOR, and others.
| Battery Type (fx-991ES PLUS) | LR44 (GPA76) or R03 (UM-4) |
|---|---|
| Battery Type (fx-570ES PLUS) | R03 (UM-4) |
| Auto Power Off Time | 10 minutes |
Press (CLR), (ALPHA), and (&) then select Yes.
Replace it at least once every three years for fx-991ES PLUS or two years for fx-570ES PLUS.
It means the displayed calculation result continues to the right.