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Embedded Systems Interview Questions
Questions Answers Views Company eMail

Give a circuit to divide frequency of clock cycle by two ?

 6 14704

Design a divide-by-3 sequential circuit with 50% duty circle?

 1 13507

Suppose you have a combinational circuit between two registers driven by a clock. What will you do if the delay of the combinational circuit is greater than your clock signal?

Wipro,

3 5697

The answer to the above question is breaking the combinational circuit and pipelining it. What will be affected if you do this?

 2391

What are the different Adder circuits you studied?

 6 10621

Give the truth table for a Half Adder, Give a gate level implementation of the same?

Infosys, Wipro,

4 10745

Draw a Transmission Gate-based D-Latch?

 1 10683

Design a Transmission Gate based XOR. Now, how do you convert it to XNOR?

Wipro,

1 10516

How do you detect if two 8-bit signals are same?

Intel,

5 18011

How do you detect a sequence of "1101" arriving serially from a signal line?

 2 7627

Design any FSM in VHDL or Verilog?

 2 11416

Explain RC circuit?s charging and discharging?

Epsilon,

5 27314

Explain the working of a binary counter?

 3 14262

Design a circuit for A + abs(B) = C, where A and B are 4 bits wide and 2?s complement representation

Qualcomm,

1 7968

Design a circuit to detect when 3 and only 3 bits are set out of 8 bits.(eg. o0101100)

Qualcomm, RIM,

13 23820

Un-Answered Questions { Embedded Systems }

Describe the life-cycle of a software development (application design) process.

408

With 12 mhz clock frequency how many instructions (of 1 machine cycle and 2 machine cycle) it can execute per second?

1524

What is the use of volatile keyword?

453

Introduction of 8051 microcontroller architecture?

599

What is tri-state logic?

683




Why is digital communication better than analogue communication?

492

Please explain what is interrupt latency? How can you reduce it?

443

What are the different types of instructions responsible for data transfer instructions.

516

What is the position of the stack pointer after the push instruction?

920

what is the difference between timer and counter of microcontroller?

723

Tell me how do you detect if two 8-bit signals are same?

685

What are the widths of data bus (db) and address bus (ab) of 8085?

598

What is an editor?

604

Explain what is the difference between mutexes and semaphores?

399

Define the architecture of the 8085 microprocessor?

568

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