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Embedded Systems Interview Questions
Questions Answers Views Company eMail

For a NMOS transistor acting as a pass transistor, say the gate is connected to VDD, give the output for a square pulse input going from 0 to VDD

Infosys,

1502

Draw Vds-Ids curve for a MOSFET. Now, show how this curve changes with increasing transistor width.

Infosys,

1344

Let A & B be two inputs of the NAND gate. Say signal A arrives at the NAND gate later than signal B. To optimize delay, of the two series NMOS inputs A & B, which one would you place near the output?

Infosys,

1517

Why is digital communication better than analogue communication?

Aricent,

884

Using four cascaded counters with a total of 8 bits, how many states must be deleted to achieve a modulus of 20,000?

Ittiam Systems,

1072

How many bits microprocessor was first developed?

Honeywell,

1101

In 8085 name the 16 bit registers?

4Cplus,

1416

What is the RST for the TRAP?

1443

Device density on a microprocessor/chip?

Sony,

1164

How can you increase ports of a microprocessor?

Honeywell, Zomato,

1373

Which interrupt is not level-sensitive in 8085?

1144

What is the purpose of Program Counter in a Micro - Processor?

1041

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

Honeywell, Huawei, Zomato,

1060

What do you mean by radio environment in building?

Ericsson,

972

Tell me the role of a car driver as one of a feedback mechanism.

Ericsson,

1010


Un-Answered Questions { Embedded Systems }

Explain briefly the string addressing mode with the help of an example?

1048


Define the number of flags present in the 8086 and name each one of them.

1090


How does a 3 tier application differ from a 2 tier one?

910


Process technology? What package was used and how did you model the package/system? What parasitic effects were considered?

2375


What is solid?

914


How many i/o ports can 8085 access?

1257


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

874


What are the boons and banes of having more general purpose registers in a microprocessor.

1244


How are local and global variables are allocated by compiler.

916


Tell me what is isr?

900


What are the conditions under which the eu enter into the wait mode?

1235


Discuss the concept of yagni.

913


How are macros different from inline functions?

941


How i/o devices are classified for embedded system?

945


Tell me what is difference between binary semaphore and mutex?

941