Architecture and features of 8051 microcontroller

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8051 architecture and features :- 8051 is also known as a MCS-51 which is developed by Intel in 1980. It has 8-bit CPU, memory, timers, counters, interrupt controller and serial I/O are highly integrated on single chip. It is a 40-pin IC. It has 4 byte input-output port, EEPROM of 4KB and RAM of 128 bytes. Architecture and Pin diagram  of 8051 is shown below.