The Greatest Crossword Puzzle

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Across
  1. 5. co-inventor of magnetic core memory
  2. 8. one of the first inventors of the mechanical calculator.
  3. 9. the first to devise the theory of machine-independent programming languages
  4. 10. designed the first general-purpose electronic digital computer
  5. 12. designed ENIAC alongside J. Presper Eckert
  6. 16. Made the mark I computer
  7. 17. the discoverer of logarithms
  8. 20. invented the first electronic digital computer
Down
  1. 1. created a program for Charles Babbage.
  2. 2. invented the first mechanical computer
  3. 3. considered to be the father of theoretical computer science.
  4. 4. played an important role in the development of the earliest programmable loom
  5. 6. founder of Microsoft.
  6. 7. first professor of mathematics at Queen's College.
  7. 11. co-inventor of the handheld calculator and the thermal printer
  8. 13. developed an electromechanical tabulating machine
  9. 14. led the team that invented and implemented FORTRAN
  10. 15. invented calculus in addition to many other branches of mathematics
  11. 18. a pioneer in building the mathematical framework of quantum physics,
  12. 19. founded NM Electronics-which later became Intel Corporation.