Transcript BA471 Management Information Systems

BA471
Management
Information Systems
Operating Systems
Operating Systems
 What do Operating Systems do?
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Perform hardware functions
Manage I/O
Use and monitor memory
Initiate, terminate, monitor processing
Provide network functions
Control access
Manage files
Operating Systems - analogy
“Tessekkuler”
means “Thank
you.”
TRAFFIC
COP
TRANSLATOR
NIGHT
WATCHMAN
Operating System
 Who’s on first?
Application Software
Operating
System
ALU
CONTROL
UNIT
REGISTER
MEMORY
Operating Systems
 Famous Operating Systems
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MVS (OS/390)
Unix (AIX, Solaris)
Linux
Windows
Mac OS
Operating Systems
 Compilers convert software (including
OS’s) into machine language (0,1)
Source
Code
Compile
Machine
Language
Note: It’s a one-way process.
Operating Systems
 Other OS Capabilities
 User Interface
 Commands
 GUI
 Multi-tasking
 Time-sharing
Scalability: The ability of a system to handle more
or less demand, more or fewer users; also a
product selling point – able to expand or
contract to accommodate growing configuration.
Operating Systems
 Other OS Capabilities
 File Management
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Retrieve from secondary storage
Manage sharing among users
Naming conventions
Restrict/authorize access to files
Operating Systems
 Platforms
 Personal
 Workgroup
 Enterprise
Operating Systems - Utilities
 Utility Programs
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Check status of operations, hardware
Compress files, optimize space usage
Monitor performance / error-checking
Perform back-ups