Embedded Systems Interview Questions
Questions Answers Views Company eMail

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

6 14632

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

1 13477

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 5654

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

2376

What are the different Adder circuits you studied?

6 10564

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

Infosys, Wipro,

4 10694

Draw a Transmission Gate-based D-Latch?

1 10651

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

Wipro,

1 10491

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

Intel,

5 17914

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

2 7600

Design any FSM in VHDL or Verilog?

2 11384

Explain RC circuit?s charging and discharging?

Epsilon,

5 27249

Explain the working of a binary counter?

3 14218

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

Qualcomm,

1 7943

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

Qualcomm, RIM,

13 23673


Un-Answered Questions { Embedded Systems }

What is a 'volatile' variable?

461


Tell me what are buses used for communication in embedded system?

474


You have a driver that drives a long signal & connects to an input device. At the input device there is either overshoot, undershoot or signal threshold violations, what can be done to correct this problem?

2154


What is special function registers (sfr)?

636


What is line of sight?

528






Explain how logical gates are controlled by Boolean logic?

613


Tell me how many types of ipc mechanism you know?

446


What is a inode?

466


Explain the difference between "set" logic, and "procedural" logic. When would you use each one and why?

415


What is the task of the pre-processor?

444


How is the system clock calculated in the 8085?

615


How can you increase ports of a microprocessor?

781


What is rtos in an embedded system?

438


Explain two ways of converting a two input nand gate to an inverter?

540


Why would you choose java in embedded systems?

402