Please enable JavaScript.
Coggle requires JavaScript to display documents.
chapter 3: operating system structure - Coggle Diagram
chapter 3: operating system structure
PROGRAM
set of computer code (set of operation) for it to perform
operating system: provide service to user and programs
user: provide service to execute program, provide funcion that help user
program:
OS SERVICE:
program execution
input output operations
File system manipulation: save files in directory, locate storage for you to save file.
communication: action between applications. interaction of operating system
Error detection: detect error and let user know
resource allocation. multiple jobs or user running concurrently, resource must allocate to each othe
accounting : keep track of users use how much and what kind of resource
protection
COMMAND LINE INTERPRETER
some os include cli in kernel
if doesn't have, use command prompt. gthese days can use drag and drop
powershell, named shell bcs its the outermost layer around the os
GUI: graphical user interface
user friendly desktop interface
icon represent files, program, actions
various mouse button for actions
system calls: computer req service frm kernel
open words, write program to read data, copy files
process control, device management, file management, communication
SYSTEM PROGRAM
action that we can see.
help run the comp hardware and the system
seperate application programmer as much as possible of particular comp hardware that in use
file management: create delete ciopy rename file
status information: details of file
file modification: create a file, inside file contain assignment, using first file is used to create another file and new content.
programming langguage supprt: compile assembler, debugger