Section 1
Preview this deck
punched cards
Front
| 5 | 0 | ||
| 4 | 0 | ||
| 3 | 0 | ||
| 2 | 0 | ||
| 1 | 0 |
Active users
0
All-time users
0
Favorites
0
Last updated
6 years ago
Date created
Mar 1, 2020
Cards (77)
Section 1
(50 cards)
punched cards
- for input (batch systems era)
command line, GUI
-types of OS
line printers
-for output (batch systems era)
-multi-user /multi-task, -multiprocessing, -single-user /multitasking, -real time OS
-classification of OS
unix
-one of the first OS to be written in 1971
convenience
-makes it very easy for the user to communicate to the computer hardware
security
-OS provides security to the resources & information against destruction & unauthorized access
efficiency
-provide an efficient usage of the system
command interpretation
-OS used to interpret the command given by user to the hardware
manage data & files
-organize your datas/ files including copy, move, delete & rename it
windows xp, linux
-examples of gui type
Operating system
-provides a basis for application programs & acts as an intermediary between computer user & computer hardware
novell netware
-resource sharing; also supports windows & mac clients
real-time systems
-expected to a task w/in a specific time constraint. it is used with real time apps, w/c monitor respond to or control external processes or environments
safe
-prevents one program from accessing memory or storage space allocated to another program & enables file protection, requiring users to have permission to perform certain functions
unix
-multi-tasking, single or multi user OS. predominant server OS on internet servers; has always used TCP/IP
macOS
-multi-tasking, single user, network-based resource sharing
control hardware
-OS controls all the parts of the computer & attempts to get everything working together
parallel systems
-each CPU can be used to serve one program or a part of a program, w/c means that many tasks can be accomplished in parallel instead of serially
file management
-file related activities such as organization, storage, retrieval, naming sharing & protection of files
system/ application program
-performs a specific task that can be directly used by user
graphical user interface
-have graphics like button, menu, pointer
-convenience, -efficiency, -both
-goals of OS
may 1991
-when linux was made
linus Torvalds
-developed linux
distributed systems
-a job that was previously done on one computer can now be shared between computers that may be thousands of miles apart
-msdos, -unix
-examples of command line type
batch systems
-designed in the 1950s to control mainframe computers.
Operating system
-is the most important program that runs on a computer & manages computer hardware
multitasking
-multiple programs can run at one time
real time OS
-responds to input instantly. it is used to control machinery, scientific instruments & industrial systems such as embedded systems
-dos, -windows, -macOS, -novell netware, -unix, -linux
-OSes
windows
-multi-tasking, single user, networking & resource sharing
-process management, -memory management, -file management, -security, -command interpretation
-functions of operating system
memory management
-OS used to allocation & reallocation of memory space to programs in need of this resources
multiprocessing
-allows to run a program on more than one CPU
run applications
-like word processors, web browsers, games etc
command line
-OS where u need to type command for all task, there is no graphics
linux
-open source, light weight, it is a version of unix, many variants & also excellent for resource sharing
single-user /multitasking
-allows to run more than one program concurrent
Operating system
-perform basic tasks, such as recognizing input from the keyboard, sending data to the display unit, maintaining all files & directories & controlling all devices attached to computer unit.
dos
-single tasking OS
-control hardware, -run application, -manage data files
-task of an OS
multi-user
-allows more than single user to work at any given time
multi-user /multi-task
-allows 2 or more users to run programs at the same time
-batch systems, -time sharing system, -personal systems, -parallel systems, -distributed systems, -real time systems, -unix
-OS revolution
time sharing systems
-the idea is to hold several jobs in memory at a time & only assign a resource to a job that needs it on the condition that the resources is available
personal systems
-when it's introduced, there was a need for an OS for this new type of computer then DOS was introduced
process management
-manage the process scheduling of system resources & synchronizing & communication among processes
tape drives
-for secondary media (batch systems era)
Section 2
(27 cards)