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Across
  1. 2. Altair 8800 manufacturer
  2. 5. TV and electronics brand
  3. 6. Xerox research center
  4. 8. Network operating system
  5. 10. Database management system
  6. 13. Operating system developed by AT&T
  7. 14. Apple co-founder Steve
  8. 15. Computer bus standard
  9. 16. Operating system for TRS-80
  10. 20. Early time-sharing operating system
  11. 21. American Standard Code
  12. 22. Innovation center
  13. 25. Developed Unix
Down
  1. 1. Graphical user interface
  2. 3. Fault-tolerant computers
  3. 4. LAN technology
  4. 7. Memory interface technology
  5. 9. Unix operating system variant
  6. 11. IBM transaction server
  7. 12. Programming language
  8. 17. Company behind early TVs
  9. 18. Digital Equipment Corporation
  10. 19. Networking company
  11. 23. Switching network technology
  12. 24. Serial communication interface