Parameter
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Microprocessor
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Micro controller
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Description
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It is Multipurpose, Programmable
device that accepts digital data as input from external input unit, processes
it as per instructions in its memory, and provides results as output at
external output unit.
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It is a Self Contained System with
a processor core, memory, and peripherals and can be used as embedded system.
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Software Protection
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Software Protection is less
achieved in Microprocessor based systems.
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Micro controllers offer more
software protection by locking the on chip memory and is made protected from
external circuit.
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Input/output Devices
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Keyboard, Mouse, Screen, disks,
printers etc.
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Switches, Relays, LEDs, LCD
Displays, radio Frequency devices ,Sensors
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Cost
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High, Because Devices like memory,
disks, and interfaces are connected externally and has to be purchased
separately.
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Decreased net cost of the embedded
system as a whole, Because no needs to
connect external devices like
Read/Write Memory, Timers etc., unless you desire to create something beyond
the limit. |
Power Consumption
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Power Consumption of
Microprocessor based system is high because each and every external connected
device requires separate power for its working.
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Power Consumption is low because
all components are embedded on the same chip and are well suited for long
lasting battery applications
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GPIO
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Maximum GPIO for most families is
limited to between 100-150
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Micro controllers contain several
general purpose I/O (GPIO) pins and are software configurable to either an
input or an output state.
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Access Time
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Access Time for Memory and I/O
Devices is more.
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Access Time for Built in Memory
and I/O devices is very low.
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Floating Point Calculations
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Floating Point calculations are
done by Processor itself.
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Does not contain any math
co-processor and hence floating point calculations are performed by software.
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Instructions Handling
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Microprocessor Support more
op-codes, few bit handling instructions.
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Micro controllers uses fewer
op-codes, more bit handling Instructions
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ADC /DAC Converter
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This Support is Provided to
Microprocessor from external ADC or DAC Converters.
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Micro controllers contains analog
to digital converter (ADC) to convert the incoming data into a form that the
processor can Recognize .less commonly DAC (digital to analog converters)
that allows processor to output analog signals or voltage levels.
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Uses
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Microprocessor are generally used
in PCs, Laptops, Smart Phones ,HDTV broadcast systems etc.
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Micro controllers are generally
used in Automobile Engine Control Systems, remote controls, office machines,
appliances, toys and implantable devise etc.
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Examples
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Intel 8085,8086,Pentium 4,Intel
i3,i5,i7 etc.
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Intel MCS-48, Infineon XC800,
Epson S1C6x etc.
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