Flashcards
Sem título
Flashcards do conjunto (11)
- 1Purpose of operating systemLinks hardware to software and provide a user interface
- 2Functions of an Operating systemFiles saving loading etc
Memory Allocation
Security-username,password,
encryption - 3OS security methodsEncryption>>strong information in a form readable only by the intended person
Usernames and passwords>>allows different levels of access for different users - 4InterruptsHardware>>printer out of paper etc
Software>>program has an error, needs to close etc - 5Why do we need interrupts?To stop running processes when an error occurs
- 6Explain the interrupt 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 - 7code levelshigh level-kind of English
Assembly code-close to 01010 etc
machine code-0101010
Hardware - 8types of high level codePython,java
- 9translators are needed for?to convert programming Code into machine code (010101)
- 10what is the difference between a translator and a compilerA compiler converts code before it is run
A translator converts it as it is entered - 11—
Informações
- Descrição
- FlashCards sobre Sem título, criado por Thiri 2001 em 04-12-2015.
- Criado por
- Thiri 2001 · dez 2015
- Atualizado
- 19 fev 2016
- Visualizações
- 0
- Avaliação