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What is a Micro Controller? A microcontroller is a single chip microcomputer made through VLSI fabrication. A microcontroller also called an embedded controller because the microcontroller and its support circuits are often built into, or embedded in, the devices they control. A m icrocontroller is available in different word lengths like microprocessors. Block Diagram    A microcontroller basically contains one or more following components: Central processing unit (CPU) Random Access Memory) (RAM) Read Only Memory (ROM) Input/output ports Timers and Counters Interrupt Controls Analog to digital converters Digital to Analog converters Serial interfacing ports Oscillatory circuits   Click For detail in Components of Micro-controller            A microcontroller internally consists of all features required for a co...

·          CPU CPU is the brain of a microcontroller. CPU is responsible for fetching the instruction, decodes it, then finally executed. CPU connects every part of a microcontroller into a single system. The primary function of CPU is fetching and decoding instructions. The instruction fetched from program memory must be decoded by the CPU. ·          Memory The function of memory in a microcontroller is the same as a microprocessor. It is used to store data and program. A microcontroller usually has a certain amount of RAM and ROM (EEPROM, EPROM, etc) or flash memories for storing program source codes. ·          Parallel input/output ports Parallel input/output ports are mainly used to drive/interface various devices such as LCD’S, LED’S, printers, memories, etc to a microcontroller. ·          Serial ports Seria...

What is Micro-Processor? Computer's Central Processing Unit (CPU) built on a  single Integrated Circuit (IC)  is called a  microprocessor . As like Mind in our body where mind is a micro-processor…. It is a programmable, multipurpose, clock -driven, register-based electronic device that reads binary instructions from a storage device called memory, accepts binary data as input and processes data according to those instructions and provides results as output. Block diagram Evolution of Micro-processor: Generation Bit Year of Introduction Example 1 st 4 1971-1972 Intel 4004 2 nd 8 1973 Intel 8088 3 rd 16 1978 Intel 8086, Zilog Z800 and 80286 4 th 32 - Intel 80386 5 th 64 1995 Pentium Pro, Dual, Quad, Octa core Basic Termino...