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Wednesday, July 20, 2011

Computer vs Embedded systems

Hardly we can find any difference between General purpose computer and Embedded systems when we glance over the capabilities. Basically both are computing systems, both have the combination of software and hardware.  But still why there is a separate field called as  "Embedded systems" other than the General purpose computers/ personal computers?
       But if we get in to the detail based on the different integral parts of the system we can list few important differences.
   
No
Characteristics
Embedded System
General Processing Computing System
1
Product quality/performance
Sophisticated
General
2
Presence in a system
Usually it will be  a small part of a large system
Whole system
3
Time constraint 
Output should be available in the specified of time else it may lead to failure
No such strict rule for most of the task
4
Flexibility
Less flexible for modifications as it is developed for specific purpose
More flexible for up gradation 
5
Input/ Output
Nonstandard input output devices.
Standard input output devices
6
System software's used for development 
Generally cross compilers and cross assemblers, RTOS
compilers, assemblers, OS etc
7
Power
Demands low power consumption to sustain in the market
Less restriction. 
8
Packaging of the product
Will be unique and varies from product to product
Most of the time well defined
9
Examples
Washing machine, Cell phone, set top box
Personal computer, Server etc





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