Flashcards

Sem título

12.betts Inglês 10 flashcards

Flashcards do conjunto (10)

1Functions of an operating systemFiles
Memory Allocation
Security - Usernames/passwords,
Encryption
2OS Security MethodsEncryption-> storing information in a form readable only by the intended person
Usernames and passwords -> allows different levels of access for different users
3interuptshardware -> printer out of paper ect
Software -> program has an error needs to close ect
4why do we need interrupts?To stop running processes when an error occurs
5Explain the interrupts steps of a printer that has run out of paper1. 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 Docs Printer restarts printing
6Code levelsHigh Level
Assembly code
Machine code
Hardware
7Types of high level CodePython, Java
8Translators are needed for?to convert Programming Code into Machine code (010101)
9what is the difference between a translatora Compile converts code before it is run.
A Translator converts it as it is entered
10—