CIS 1200 Lecture Notes - Lecture 51: Interrupt Handler, Virtual Memory

• School: University of Guelph
• Department: Computing and Information Science
• Course: CIS 1200
• Professor: John Saville

Document Summary

Os needs to arrange for the execution of all its activities in a systematic way; os assigns a slice of its time to each activity requiring the cpu"s attention. Os switches between processes thousands of times a second s it appears that everything is happening seamlessly. Multitasking when os allows you to perform more than one task at a time. Ram temporary storage area for instructions and data the processor needs. Os is responsible for coordinating the space allocations in ram to ensure that there is enough space for all the waiting instructions and data. When there isn"t enough room in ram for os, it borrows room from the hard drive: this borrowing process is called virtual memory.