Across
- 5. The designer of ENIAC conducted an experiment with _________ to determine which type of cable should be used.
- 7. The first computer bug was a _________
- 8. The first commercial computer was called the _________.
- 12. Dropped out of college to work on writing computer programs.
- 14. Joseph Marie Jacquard invented the ________________
- 15. The ENIAC employed more than 18,000 ____________
- 16. IBM hired ____________ to provide software for their PCs.
- 19. Blaise Pascal also invented the hydraulic press and the _____________.
- 20. A ______________ was a motorized typewriter used to transmit keystrokes to the mainframe and print the computer's response.
- 21. The first personal computer
Down
- 1. The Colossus machine was built to break the cryptographic ________ used by ______________ during World War II.
- 2. A job title for human beings who performed repetitive calculations.
- 3. Charles Babbage's proposed calculating machine was called the _______________
- 4. The oldest surviving abacus is from _______________ dating back to 300 BC.
- 6. The ____________ allowed computers to be fabricated onto integrated circuits and made personal computers possible.
- 9. The ___________ is a tool for mathematical computations. It can perform addition and subtraction at the same speed as a hand calculator
- 10. The _______________ desk was used for counting and was successful in completing the 1890 census in three years.
- 11. Inventors tried to come up with a more accurate and faster way of computing because human computers would make _________________
- 13. Wilhelm _____________ created the first gear-driven calculating machine.
- 17. The first problem run on the ENIAC took ___________ seconds.
- 18. The ___________ computer filled a 20 by 40 foot room.