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Embedded Systems Interview Questions
Questions Answers Views Company eMail

Signal voltage ranges for a logic high and for a logic low in RS-232C standard are

CDAC,

662

What does SD RAM refers to

CDAC,

608

How is EPROM generally erased

CDAC,

643

In what is the ready pin of a microprocessor used

CDAC,

675

The PCI bus is the important bus found in all the new Pentium systems because

CDAC,

630

Which type of JMP instruction assembles if the distance is 0020h bytes

CDAC,

963

If a1M1× DRAM requires 4 ms for a refresh and has 256 rows to be refreshed, no more than __________ of time must pass before another row is refreshed.

CDAC,

782

What is 8251?

CDAC,

657

In which T-state does the CPU sends the address o memory or I/O and the ALE signal for Demultiplexing

CDAC,

1003

Where the data is transferred in a DMA write operation?

CDAC,

708

What is the bit size of Itanium processor of Intel?

CDAC,

616

If the crystal oscillator is operating at 15 MHz. What will be the PCLK output of 8284?

CDAC,

1128

What number of the times the instruction sequence below will loop before coming out of loop is MOV AL, 00hA1: INC AL JNZ A1

CDAC,

960

In the instruction FADD, What does F stands for

CDAC,

801

In case of DVD, the speed is referred in terms of n X. Here what does X refers to

CDAC,

638

Un-Answered Questions { Embedded Systems }

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

434

Explain what type of architecture is used in 8085 microprocessor?

527

Define the process of an interrupt operation in the 8086?

565

How many i/o ports can 8085 access?

676

Differentiate testing and verification?

523




Describe the various effects of scaling?

4314

What does the eu do in the 8086?

601

Tell me can a pointer be volatile?

422

When is the LOCK prefix used often?

608

Draw the Differential Sense Amplifier and explain its working. Any idea how to size this circuit? (Consider Channel Length Modulation)

895

With the help of an example explain how physical address is calculated?

544

Explain how does combination of functions reduce memory requirements in embedded systems?

424

What is Latch Up? Explain Latch Up with cross section of a CMOS Inverter. How do you avoid Latch Up?

762

What are issues related to stack and bank 1.?

786

What is watchdog timer?

499

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