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The difference is base on the requirement of their0 application.
embedded system also include microcontroller.
The difference between a single board computer and microcontroller is that a single board lacks a general purpose interface and the mass storage devices.
Psoc includes the analog and digital component where else in controller only digital. :P
The basic difference between the microprocessor and microcontroller is that we can interface a microcontroller directly means "for example we can directly connect a keyboard to microcontroller to any of its ports"....where as for microprocessor we can't interface directly...we require a circuit board since it requires ram,ic's.....etc.,! beyrojac mahinay
Check these articles:http://www.ucpros.com/work%20samples/Microcontroller%20Communication%20Interfaces%201.htmhttp://www.ucpros.com/work%20samples/Microcontroller%20Communication%20Interfaces%202.htm
89s51 and 89s52 both are same version of 8051 microcontroller
Microcontroller = (microprocessor+memory+peripherals) on a single chip
ARM7 is an architecture, not a specific model. ARM7 processor can be made by any licensee of the technology to suit their needs. As such, their clock frequencies can range anywhere from 1 Mhz to 2.5 GHz.
avr is high speed cmpar to 8051.in 8051 there are less number of instructions