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03000EE309092001

Show the interfacing of LED with 8085 using 8255 PPI and write a program to
continuously turn ON and OFF with a duty ratio of 0.5
Differentiate between assembler and compiler
PART 0

Answer any two full questions, each carries 10 marks.
Explain MOV, MOVX and MOVC
Explain the various modes of operation of Timer of 8051
Explain the register banks of 8051
Write an ALP in 8051 to multiply two numbers and store the result in external
memory locations 4500 and 4501.
Draw the internal architecture of 8051 microcontroller
Write a program for a counter to find the frequency of the signal connected to

P3.4

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