EECS 1520 Lecture Notes - Lecture 7: Process Control Block, Logical Address, Software Categories

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Gerald Kio

Document Summary

Software: collection of electronically stored instructions that allows one to interact with a computer. Facilitate practical use of a computer system and its resources. Act of managing the use of cpu by individual processes. Data structure used by os to manage information abt a process, including current values of. Base and bound registers or pre-map tables. Each state is represented by list of pcb, one for each process in that state. There is only one cpu, and therefore only one set of cpu registers, which contain the values for currently executing process. Each time a process is moved to the running state; Register values for currently running process are stored into its pcb. Pcb is moved to the list of the state into which it goes into. Register values of new process moving into running state are loaded into. Exchange of register info is context switch. Track where and how a program resides in memory.