| Answer | Crossword Clue |
|---|---|
| ABACUS | Calculator of a kind |
| ABACUS | Kind of calculator |
| ABACUS | Calculator of a sort |
| ABACUS | Ancestor of a calculator |
| PASCAL | Inventor of a 17th-century calculator |
| keypad | separate section on some computer keyboards, grouping together numeric keys and those for mathematical or other special functions in an arrangement like that of a calculator |
