Class 10 Inside the PC : operating systems
Class 10 Inside the PC : operating systems
Semiconductor Memory
Moore’s Law: number of transistors double every ~2.5years
DRAM writing & reading
Read Only Memory (ROM)
Programmable Memory (PROM) (by burning out fuses)
Magnetic Disks
Optical Disks ( ~ 3.5GB)
Putting it all together: the PC
Speed performance (MHz); major problem is heat dissipation directly proportional to speed
Microprocessors
Microprocessors
Bootstrapping
config.sys (example)
autoexec.bat (example)
Types of OSs - functions
Distributed Computing Systems
Fault tolerant
Parallel processing
Real-time systems
OS Structure
LANs (Local Area Networks)
Information resource sharing: File-server
Information resource sharing: Client-server
Network topology : Star
Network topology : Ring
Network topology : Bus
Network topology : Fully distributed
Advantages/disadvantages
Gateways & Bridges
WANs (Wide Area Networks): The Internet
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