Across
- 3. anything that serves to warn, direct, or command.
- 6. the act of inventing
- 7. an inventor, scientist, and engineer who invented the first telephone.
- 10. a communication containing some information, news, advice, or request sent by messenger, telephone, or email.
- 11. named after Samuel Morse. It is made up of dots and dashes.
- 13. commercial, educational, and governmental computer networks.
Down
- 1. to beat on anything like a hollow tree or similar object rhythmically
- 2. urgent or immediate
- 4. delivering messages, newspapers, and mail using horses.
- 5. to cause to grow or expand
- 8. transmitting signals over invisible radio waves instead of wires.
- 9. an action of sending text messages.
- 11. an employee of a post office who carries mail.
- 12. any system of symbols, signs, sounds, or gestures