Across
- 1. First operational electronic digital computer
- 5. Introduced on a large scale at the Philadelphia centennial exposition
- 8. A memory consisting of tiny ferrile donuts
- 9. Binary algebra introduced last 1852
- 10. Develops binary algebra
- 11. First major electrical part of a computer
- 12. Introduced the first mechanical calculator
- 13. Microprocessor with 3.1 million transistors
Down
- 2. Key-driven adding and subtracting calculator
- 3. Introduced the Stepped Reckoner last 1671
- 4. Invented the Abacus
- 6. Consisted of a stack of alternating discs
- 7. Telegraph introduced by Samuel F. Morose in 1832
- 9. Introduced the analytical engine