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Embedded Systems Interview Questions
Questions Answers Views Company eMail

Explain various adders and difference between them?

Intel,

1157

For f = AB+CD if B is S-a-1, what are the test vectors needed to detect the fault?

Intel,

1196

Implement a function with both ratioes and domino logic and merits and demerits of each logic?

Intel,

1152

Explain the working of Insights of a pass gate ?

Intel,

1161

Explain the Working of a 2-stage OPAMP?

Intel,

1147

why 8085 processor is called an 8 bit processor?

Rolta,

994

In what way interrupts are classified in 8085?

4Cplus,

1104

what are the various flags used in 8085?

4Cplus,

1178

what is program counter?

Wipro,

1080

Give a big picture of the entire SRAM Layout showing your placements of SRAM Cells, Row Decoders, Column Decoders, Read Circuit, Write Circuit and Buffers

Infosys,

1061

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

Infosys,

1311

In the design of a large inverter, why do we prefer to connect small transistors in parallel (thus increasing effective width) rather than lay out one transistor with large width?

Infosys,

1129

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

Infosys,

1142

Draw the stick diagram of a NOR gate. Optimize it

Infosys,

1227

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)

Infosys,

1158

Un-Answered Questions { Embedded Systems }

How are variables mapped across to the various memories by the c compiler?

1088

Explain what is the difference between mutexes and semaphores?

762

After the following has been executed MOV BL, 8C MOV AL, 7E ADD AL, BL; what will be the contents of register AL?

2280

Why embedded system is useful?

896

How does a Bandgap Voltage reference work?

3847

Write a program to show the functionality of power-save super loop.

1022

Draw a CMOS Inverter. Explain its transfer characteristics

1135

Do you know what is priority inversion?

800

Why do you use two ground pins in microprocessor 8086?

949

Define time invariant system.

868

Tell me what is the need for an infinite loop in embedded systems?

828

What is the RST for the TRAP?

1306

What type of interrupt is the “trap” and what does it do?

1055

How many bits microprocessor was first developed?

986

Explain architecture of 8051 microcontroller?

1059

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