Flashcards
Untitled
Cards in this deck (10)
- 1What is the purpose of the operating system?Links hardware to software and provides an UI.
- 2Function of an operating system?Files saving loading ect
Memory allocation
Security - usernames/ password, encryption - 3OS security methodsEncryption-> storing information in a from readable only by the intended person.
Usernames and passwords-> allows different levels of access for different users. - 4InterruptsHardware-> printer out of paper ect software-> program has an error needs to close
- 5Why do we need interruptsTo stop running processes when an error occurs
- 6Explain the interrupt steps of a paper that has run out of paper?1. Send interrupt OUT of PAPER to PC.
2. OS notifies user, user fills printer.
3. Printer sends signal that it is now ready.
4. OS reseeds Doc Printer restarts printing. - 7code levelsHigh level code
assembly language
machine code
hardware - 8types of high level codepython,java
- 9why are translators are needed to convert programmingto convert programming code into machine(010101)
- 10What is the difference between a translatorA compile converts code before it is run.
A translator converts it as it is entered.
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- Flashcards on Untitled, created by 12.jarvis on 04/12/2015.
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- 12.jarvis
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