This is a Casio calculator user manual, which contains the function introduction and usage methods of this calculator
This guide explains how to operate Casio's D‑20TER, DF‑120TER, JF‑120TER, MS‑100TER, MS‑120TER, SL‑310TER and SL‑320TER calculators. It covers the selector functions, display indicators, error handling, and steps for correcting input mistakes.
Key features include a two‑way power system (solar cell plus a button‑type battery), automatic power‑off after six minutes of inactivity, and various rounding and decimal‑place selectors that let you control how numbers are displayed and calculated.
| Power supply (D‑20TER/DF‑120TER/JF‑120TER) | Two‑Way Power System, solar cell + LR44 battery |
|---|---|
| Power supply (MS‑100TER/MS‑120TER/SL‑310TER/SL‑320TER) | Two‑Way Power System, solar cell + LR54 (LR1130) battery |
| Battery life | Approximately 3 years (1 hour operation per day) |
| Dimensions (D‑20TER) | 32 mm (H) × 151 mm (W) × 158 mm (D) |
| Dimensions (DF‑120TER) | 36 mm (H) × 126 mm (W) × 175 mm (D) |
| Dimensions (JF‑120TER) | 29.3 mm (H) × 107 mm (W) × 175.5 mm (D) |
| Dimensions (MS‑100TER / MS‑120TER) | 30.7 mm (H) × 103 mm (W) × 145 mm (D) |
| Dimensions (SL‑310TER / SL‑320TER) | 7.5 mm (H) × 70 mm (W) × 118.5 mm (D) |
The calculator uses a two‑way power system that supplements the solar cell with a button‑type battery (LR44 or LR54).
No. Battery replacement must be performed by an authorized Casio dealer or service centre.