difference between microcontroller and dsp board?

[wajahat]

difference between microcontroller and dsp

hi everyone, i started working on miocrocontroller.I wanted to use it for compreesion purposes.Someone told me that dsp board would be abetter choice.What i want to know is what is the difference between microcontroller and dsp board .How do they differ as far as processing is concerned.

Any response would be helpful.Thanks.

 

[Kral]

main diff. b/w microcontroller & dsp

wajahat,
DSPs are optimized for speed and DSP. For example, most DSPs execute all their instructions in a single machine cycle. Also, DSPs have instructions specifically designed for DSP, such as "MAC" (multiply and accumulate) which execute in a single machine cycle.
Regards,
Kral

 

[raghavenderece]

comparison between microcontroller & dsp

well answered bove,
there are two kinds of memories available in DSP processors ,seperate for data & program memory, suppose we want to do convolution the fixed data will be stored in in one of the memory,suppose h impulse reponse,and the incoming data in the other, for real time applications, thus it efficiently calculates the task without using of much processor cycle time,thus it will be faster when compared to MC,where the same convolutio will take so many machine cycles.