| Answer | Crossword Clue |
|---|---|
| MICROPHONE | Emile Berliner's 1877 good idea |
| PHONOGRAPH | Thomas Edison's 1877 good idea |
| Answer | Crossword Clue |
|---|---|
| MICROPHONE | Emile Berliner's 1877 good idea |
| PHONOGRAPH | Thomas Edison's 1877 good idea |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.