Memory manager
Device manager
Processor manager
Communication manager
Application software
The motherboard
The operating system
The platform
Resource management
Processor management
File management
Networking
DVDs
CDs
Main storage
Primary storage
Fork
New
Create
Creation
Compilers
Utility programs
Kernel code
System libraries
Wild cards
Super
Internal
External
Multi processing
Time sharing
Multi tasking
Multi programming
Multi user computing
Object oriented programming
13 character
36 character
53 character
63 character