Digital Electrical & Microprocessors important question/question bank for Electrical engineering


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Below you can find some important questions for the subject Digital Electrical & Microprocessors. These questions will help you prepare better for your semester exams.


  • Very Short Answer type questions.
Q. The radix of octal number is _______.
Q Define 1's complement method.
Q What is truth table?
Q Define Combinational circuits.
Q Define DeMorgan's theorem.
Q Define De- multiplexer.
Q Write any two applications of flip flops.
Q Write any two types of counters.
Q Define D/A converter.
Q Define semi-conductor memories.
Q IC 8085 has _______ number of pins.
Q ______ is non- maskable interrupts.
Q What is function of program counter?
Q Define register indirect addressing mode.
Q Define debugging.
Q Define Opcode.
Q Define stack.
Q iC 8259 is used for ____.

  • Short answer type questions
Q Write a short note on "BCD code".
Q Subtract 11011 from 11110 using 2's compliment method.
Q Why NAND and NOR gates are known as Universal gates?
Q What are three basic laws of Boolean algebra?
Q State and explain DeMorgan's Theorems.
Q What is the difference between half adder and full adder?
Q Draw block diagram and truth table of 4:1 MUX.
Q Explain operation of J-K flip flops with the help of truth table.
Q Write a short note on "Counters".
Q What are different types of Semi conductor memories?
Q Draw pin configuration of 8085 microprocessor.
Q What are different types of addressing modes in 8085 microprocessor.
Q What are different schemes of data transfer between peripheral and microprocessor?
Q Write a short note on " IC 8257".
Q What are the main features of 8085 microprocessor?

  • Long answer type questions.
Q. Draw symbol and truth table of OR, AND, NAND, NOR & X-OR gates.
Q. Find out the minimal expression for the function using K-Map
Y(A,B,C,D)=Σ (1,5,7,8,12)+d(3,10,14)
Q. Draw diagram and explain working principle of R-2R D/A converter.
Q. Draw architecture of 8085 microprocessor. Also explain each block of 8085 microprocessor.
Q. Write an assembly language program for finding average of N given numbers.

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