Across
- 2. in any direction
- 4. movements
- 5. Boxes that are filled in with pencil that reflect
- 6. a stick that is tilted upright that can move the cursor when
- 8. a group of electrical switches that are placed on a board.
Down
- 1. sensors that send motion trackers via electrical signals
- 2. a screen that is scattered with grid software that senses
- 3. a small ball in a cup that senses finger movements
- 7. a in fared light that senses directional movement