•
File Management
•
Application Management
•
Built-in Utility Programs
•
Control of Computer Hardware
Operating System Functions
OPERATING SYSTEMS: DOS, WINDOWS, UNIX,
LINUX, MAC OS.
•
Later, instructions were given to the
computer with punch
cards or magnetic
tape.
•
If you wanted to run a different
program, you had to wipe out the first
program from memory and then load
another program into memory
.
•
Microsoft Windows
•
MacIntosh OS
•
Linux
PC Operating Systems
Examples: Microsoft Windows, Linux, Unix,
Mac OS X, iOS, Android.
Microsoft’s MS-DOS was one of
the
first Operating Systems for
Personal Computers (PCs).
No mouse. Instead, you had to
type
a lot of special computer
commands.
Disk Operating System
( DOS )
•
The first PC Operating System (1981)
•
Not a Multitasking OS, only one program could run
at a time
•
A command-line interface, no GUI.
•
Early versions of Windows sat on top of DOS and used it to
communicate with the BIOS.
•
Windows XP communicates directly with the BIOS, but allows
commands to be entered via a command prompt.
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