(೧). MICROCONTROLLER

(Singie chip)

O Microprocessors
The basic MPU contains the central processing unit and possibly a few additional items

but the memory and also the Input Output interface is external.

(அ). GENERAL PURPOSE MICROPROCESSOR SYSTEM

Data bus

Address bus

ப Digital Signal Processor

The digital signal processor (DSP) is a special designed processor to handle signals, rather
than data. Processing signals (whether audio or video) is much more complex than processing
digital signals. To process audio and video signals, the hardware/software needs to perform
an operation called filtering, in which unwanted frequencies are removed. In signal
processing, another important task is to convert the signal in frequency domain.
Analyzing a_ signal 11 frequencydo 7811 requires’ intensive mathematical
computation, which general-purpose processors take a lot of time to carry out. The DSP

carries out such mathematical computations quickly using a special module.

0 Memory