Crash Course Computer Science Part 2

Edit Answers
1234567891011121314151617181920
Across
  1. 2. they can run many programs at what
  2. 5. operating systems, or OS's for short are just what
  3. 11. they had to write code as what often just by reading manuals, and hope ti worked when shared
  4. 12. not only did they have to worry about writing their program, but also how to interface with each and every model of printer and all devices connected to a computer what are called
  5. 14. the most influential of early what operating systems was Multics or multiplexed information and computing service release in 1916
  6. 15. in the late 50's computers had gotten so fast what waiting for slow mechanical things, like printers and punch card readers
  7. 16. Dennis Ritchie one of the what working on Multics, once said one of the obvious things that went wrong with Multics as a commercial success was just that it was sort of over engineered in a sense
  8. 17. this ability enable by the operating system is called
  9. 19. this was clearly terrible, so to make it easier for programmers, operating systems stepped in as what between software programs and hardware peripherals
  10. 20. this is also really useful in protecting against malicious software like what
Down
  1. 1. they knew it was going to be wicked fast, so the needed a way to what use of the expensive machine
  2. 3. features like this meant Multics was really what for its time
  3. 4. instead of being given one program at a time computers could be given what
  4. 6. they wanted to what the OS into two parts
  5. 7. there was no downtime while someone scurried around and office to find the next program to run. this is what
  6. 8. while computers go faster, they also got what
  7. 9. first released in 1981 it became the what OS for early home c computers, even though it lacked multitasking and protected memory
  8. 10. more specifically they provided a software abstraction through API's called what
  9. 13. developers didn't want mischievous users what data they shouldn't use
  10. 18. to hide this complexity operating systems what memory locations complicated features like this meant Multics was really what for its time