Across
- 3. the first photographic ______ was invented in 1816 by Frenchman Joseph Nicéphore Niépce.
- 5. Charles Babbage invented the first automatic digital ___________.
- 7. A ____ is a surface for placing and moving a computer mouse.
- 9. _______ is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the frequency range
- 11. The Osborne 1 was invented as the first true mobile computer
- 13. The _______ is a 3-D combination puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik.
- 14. are spectacles that turn your vision 90 degrees towards your feet
- 15. The first practical wireless ____ communication system was developed in Italy by Guglielmo Marconi.
Down
- 1. 1876, Bell was granted US patent for a method of transmitting speech by telegraphy - the ______.
- 2. A _______ or a timepiece is a device used to measure and indicate time. The _______ is one of the oldest human inventions
- 4. The earliest known _____ was a carved stone basin that held precious drinking and religious, ceremonial water.
- 6. Older version of keyboard
- 8. in 1642, the first true “_______” was invented: one that performed calculations through a clockwork-type of mechanism.
- 10. _____ were developed after the introduction of paper currency to the West in the 1600s.
- 12. _____ is a device that translates sound vibrations in the air into electronic signals.