Across
- 3. the leading developer of personal-computer software
- 4. Dots and dashes that are transformed into electrical impulses
- 6. the first calculator
- 8. developed the concept of zero
- 10. The birth and growth of electronic information
- 13. the leading information retrieval service of the Interne
- 15. transmit info over great distance with great speed
Down
- 1. developed the making of paper from rags
- 2. first of the 4 basic period of information technology
- 5. he invented the telescope
- 7. writing system devised by the Summerians
- 9. first mechanical computing machine
- 11. pen-like devise used to scratch markings on wet clay
- 12. created the first effective personal computer
- 14. created iPhone, iPod, iPad, iMac,