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86 Family Interview Questions
Questions Answers Views Company eMail

What is the difference between MOV and MVI?

 15 57887

What are the functions of RIM, SIM, IN?

Pappu Sons, Wipro,

10 65626

What is the immediate addressing mode?

 13 25270

What are the different flags in 8085?

Spectra Innovations, TCS, Wipro,

24 86288

What happens during DMA transfer?

 9 23909

What do you mean by wait state? What is its need?

 2 22424

What is PSW?

DRDO,

11 47781

What is ALE? Explain the functions of ALE in 8085.

 17 139396

What is a program counter? What is its use?

 9 78177

What is an interrupt?

TCS,

13 16805

Which line will be activated when an output device require attention from CPU?

 4 12086

Give two ways of converting a two input NAND gate to an inverter ?

 2 15497

Given a circuit, draw its exact timing response?

ATS,

2736

What are set up time & hold time constraints What do they signify Which one is critical for estimating maximum clock frequency of a circuit?

AMD,

1 7828

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

 6 12949

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Un-Answered Questions { 86 Family }

What is program counter in 8085?

155

Define bit, byte and word.

187

Explain the software instruction ei and di?

171

Define the 8085 instruction format and their classification according to word size?

156

What is lookup table microcontroller?

109




What are the typical errors associated with using stack in a program?

178

What is the bus in a microcontroller?

145

These are two ways in which a microprocessor can come out of Halt state.

199

What does quality factor mean?

156

What is the need for port?

146

Can an rc circuit be used as clock source for 8085?

161

Logic calculations are done in which type of registers?

199

What are the different types of addressing modes?

150

What are the steps involved in a fetch cycle

149

Why the temporary registers w and z are named so I mean we start from a,b,c,d,e then h and l coz h stands for higher bit nd l for lower bit of the address pinted by memory pointer....but wats w and z for?

153

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