| Answer | Crossword Clue |
|---|---|
| ABACI | Early adding devices |
| ABACI | Simple adding devices |
| ABACI | Early counting devices |
| KEYHOLES | Early listening devices. |
| Answer | Crossword Clue |
|---|---|
| ABACI | Early adding devices |
| ABACI | Simple adding devices |
| ABACI | Early counting devices |
| KEYHOLES | Early listening devices. |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.