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Why the cost of microprocessor is greater than that of a micro controller?
Wiki User
∙ 13y ago
Microprocessors tend to be much faster than microcontrollers. As real time systems usually don't require fast processors the additional power used for the extra speed is seen as wasted. Older boards are also preferred as it is less likely to contain bugs.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoThis is because micro-controller (MCU) has built-in microprocessor, RAM, ROM, Serial Interfaces, Parallel Interfaces, Analog-To-Digital Converter (ADC), Digital-To-Analog Converter (DAC) and much more inside the same chip. But it really depends on our application whether to use micro-processor or micro-controller. Micro-controller is mainly used for controlling applications.
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Any controller used in motors or electrical drives are only to get variable speed or variable torque or to get higher efficiency. The controller can be anything, it might be micro controller or it can be DSP controller or may be other. But DSP controller finds some advantages over micro controller. Both the controllers are Digital controllers only, but DSP controller has inbuilt Analog to Digital converter, inbuilt Digital to analog converter , inbuilt counter and inbuilt pulse generator. With a micro controller we need to assemble all the above converters, counters and pulse generators externally, so DSP based electrical drives are more popular though the cost is more compared to micro controllers.
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