Embedded Systems Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Embedded Systems Interview Questions

Questions Answers Views Company eMail

Tell me what is the need for dmac in es?

872

Do you know what is virtual memory?

848

Tell me is count down_to_zero loop better than count_up_loops?

878

Tell me what is the need for having multibyte data input and output buffers in case of device ports?

805

Tell me what is top half & bottom half of a kernel?

860

Do you know what is the function of watchdog timer in embedded system?

860

Tell me why does pre-emptive multi-threading used to solve the central controller problem?

898

Tell me whether we can use semaphore or mutex or spinlock in interrupt context in linux kernel?

872

Please explain what is semaphore?

937

Tell me can include files be nested?

857

Tell me what are the different storage classes in c?

900

Explain me what is semaphore?

909

Tell me can a variable be both const and volatile?

930

Tell me can we put breakpoint inside isr?

1000

Tell me what is null pointer and what is its use?

892

Un-Answered Questions { Embedded Systems }

What is an interrupt? List various types of interrupts available in 8051 microcontroller?

1188

State the two type of 16 bit registers and define them?

977

How can you reduce interrupt latency?

812

Explain in steps what happens when an interrupt occurs?

1113

Can you tell how many pins are there in 8085 Microprocessor?

1059

How can interrupts be classified in the 8086?

1248

Intel 8051 follows which architecture?

1154

Given a layout, draw its transistor level circuit. (I was given a 3 input AND gate and a 2 input Multiplexer. You can expect any simple 2 or 3 input gates)

1253

Describe the (status) flag register of 8085?

1071

Explain the two types of software?

1075

Draw Vds-Ids curve for a MOSFET. Now, show how this curve changes considering Channel Length Modulation.

1251

What are the 4 types of inheritance relationship?

926

What are recursive and non recursive systems?

962

What types of CMOS memories have you designed? What were their size? Speed?

4702

How many interrupts are there in 8085?

1157

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