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The stack uses which policy out of the following-- lifo, fifo, round robin or none of these ?

Asked By: Interview Candidate | Asked On: Sep 2nd, 2005

Answered by: raji on: Mar 13th, 2013

Stack uses LIFO. Example for LIFO is collection of coins arranged one by one.

Answered by: subash on: Sep 11th, 2012

The operation is dependent upon the microprocessor and the stack operation is simplified as first in last out(filo)

18 answers


Equivalent gray code representation of ac2h.?

Asked By: Interview Candidate | Asked On: Jul 16th, 2005

Answered by: ashok on: Jan 18th, 2013

D7CH.

Answered by: aadhi on: May 31st, 2006

ANS: FA3H:: msb remains same. retst is obtained by xoring the consecutive bits.

4 answers


The vector address of rst 7.5 in 8085 processor is _______.?

Asked By: Interview Candidate | Asked On: Jul 17th, 2005

Answered by: Neeshu Agarwal on: Dec 24th, 2012

RST 7.5 - Maskable - Vector - 003C (H) - Edge triggered RST 6.5 - Maskable - Vector - 0034 (H) - Level triggered RST 5.5 - Maskable - Vector - 002C (...

Answered by: Nilesh Trimbake on: Oct 5th, 2011

Multiply by 8 and then convert to HexaDecimal

4 answers


What is the function of ale in 8085 ?

Asked By: Interview Candidate | Asked On: Aug 23rd, 2005

Answered by: swetha on: Dec 12th, 2012

LIFO

Answered by: arvinth ram on: Aug 8th, 2012

Address latch enable is used for combining lower order address byte to higher order address byte

12 answers


Simplify the expression ab + a( b + C ) + b ( b + C )?

Asked By: Interview Candidate | Asked On: Jun 1st, 2005

Answered by: Jenitaa Adel Queen on: Dec 4th, 2012

AB+AB+AC+BB+BC AB+AC+B+BC AB+AC+B(1+C) AB+AC+B AB+B+AC B(A+1)+AC B+AC

Answered by: sudhakar venkatraman on: Nov 11th, 2012

Perfect ans: B+AC

14 answers


A voice signal sample is stored as one byte. Frequency range is 16 hz to 20 hz. What is the memory size required to store 4 minutes voice signal?

Asked By: Interview Candidate | Asked On: Aug 23rd, 2005

Answered by: adi on: Sep 30th, 2012

bt practically i required 1.07 mb to record 1.31 min speech, any1 kno its calculation?

Answered by: adityajain on: Nov 21st, 2009

Voice signal is sampled at 8000 samples per second. (Human voice is in the range of 300Hz-3400Hz, and according to nyquist sampling rate we take it more than double the rate).For a 4  min. voice ...

12 answers


A nand gate becomes ___ gate when used with negative logic ?

Asked By: Interview Candidate | Asked On: Aug 25th, 2005

Answered by: SUBASH on: Sep 11th, 2012

NOR gate

Answered by: seemak on: Apr 9th, 2010

It is OR gate.

29 answers


What is the advantage of cmos over nmos ?

Asked By: Interview Candidate | Asked On: Aug 31st, 2005

Answered by: sumit on: Jan 27th, 2012

The most important advantage of CMOS is the very low static power consumption in compare technology.

Answered by: shikha bansal on: Jan 3rd, 2012

CMOS provides more noise margin than NMOS.

7 answers


How much time does a serial link of 64 kbps take to transmit a picture with 540 pixels.?

Asked By: Interview Candidate | Asked On: Aug 23rd, 2005

Answered by: Prakash on: Oct 21st, 2011

for gray 1 pixel = 1 byte. for color 1 pixel = 3 byte; 64kbps =64 kilo bit per sec; 64kbps= 64/8 kilo byte per sec= 8000 byte per sec; so 540 gray pixels, time=540/8000=0.067sec; for color 540 pixels...

Answered by: vengat86 on: Aug 18th, 2009

In transmission its considered as download and upload so, we have 64kbps  Divide by 8 to get the download speed so its 8kbps ie 8192 bits per sec Now consider the image its 540Bytes convert ...

15 answers


What is parity generation ?

Asked By: Interview Candidate | Asked On: Jun 1st, 2005

Answered by: Atul on: Oct 18th, 2011

In digital communications, an extra bit is sometimes appended to the message to make the ‘logic high’ bit count even or odd. This extra bit is know as parity bit and used for error detection. Re...

Answered by: sherina on: Sep 18th, 2011

Parity bits are extra signals which are added to a data word to enable error checking. There are two types of Parity - even and odd.

6 answers


What is the memory space required if two unsigned 8 bit numbers are multiplied ?

Asked By: Interview Candidate | Asked On: Aug 19th, 2005

Answered by: raval vikram on: Sep 16th, 2011

16 bit

Answered by: karam_sodhi@yahoo.com on: Sep 11th, 2011

-128 to +127

11 answers


Give the output when the input of a d-flip flop is tied to the output through the xor gate.?

Asked By: Interview Candidate | Asked On: Apr 10th, 2005

Answered by: Maharasi.V on: Aug 13th, 2010

If the input is 0, previous state is maintained and if the input is 1, toggling operation occurs.

Answered by: Arun Segaran on: Nov 2nd, 2007

It becomes a T-flip flop

3 answers


An active high input s-r latch has a 1 on the s input and a 0 on the r input. What state is the latch in?

Asked By: Interview Candidate | Asked On: Jun 1st, 2005

Answered by: muthumlk on: Aug 4th, 2010

For an SR latch, if S is in ON state, the latch is set. So the o/p is 1 and the latch is in ON state.

Answered by: Gopi on: Jun 1st, 2005

Latch state is in high state( ouput Q = 1).

2 answers


Determine the logic gate to implement the following terms--abc, a+b+c?

Asked By: Interview Candidate | Asked On: Jun 1st, 2005

Answered by: nikhil4nigam on: Jul 31st, 2010

Since NAND and NOR are the universal gates, hence the logics can be implemented simply by using NAND or NOR gate.

Answered by: pushpalathakrishnan on: Jul 29th, 2010

Using OR gate, if any one of the inputs A, B and C are 1 the output of OR gate is 1. In case of AND gate, the output of AND gate is 1 only if all the three inputs A,B and C are all set to 1.

3 answers


What is the effect of temperature on the icb in a transistor?

Asked By: Interview Candidate | Asked On: Apr 10th, 2005

Answered by: sachinnitw on: Nov 7th, 2009

Icb increases with temperature.

Answered by: Ramachandran P.R on: Apr 30th, 2006

what ever may be the temprature change there will not be any collector to base current

2 answers


Serial link of 64 kbps

How much time does a serial link of 64 kbps take to transmit a picture with 540 pixels.

Asked By: ved_verma | Asked On: Jun 30th, 2008

Answered by: japan_dave88 on: Aug 20th, 2009

I would say that it also depends on length of the link as suppose Two devices named A and B are located 1000 kilometer far and we have link of 64kbps. Than when A will start sending first bit of ...

Answered by: shreekanthss on: Feb 2nd, 2009

Suppose a pixel is represented by 8 bits. Then total size=540*8=4320bits
It takes 4320/64000=0.0675 seconds

5 answers


What is the advantage of synchronous circuits over asynchronous circuits ?

Asked By: Interview Candidate | Asked On: Aug 25th, 2005

Answered by: Arun Segaran on: Nov 2nd, 2007

Not many synthesis tools are available to synthesize a asynchronous design at RTL 

Answered by: swatias on: Jan 11th, 2007

To avoid race effects and deadlock effect, synchronous circuits are used

4 answers


What is the reason for refresh operation in dynamic rams?

Asked By: akshatha | Asked On: Jul 16th, 2007

Answered by: reddy on: Oct 31st, 2007

The use of capacitor circuits instead of logical gates as in static RAMs demand the refreshing circuits.
The charging and discharging of capacitors while storing bits could cause errors.

1 answer


Dce devices used for?

Asked By: Tasar mehmood | Asked On: Dec 28th, 2006

Answered by: yogeshforever on: Aug 4th, 2007

DCE stannds for data communication end. In compouter  world  a modem is a DCE device.DTE stands for data terminal equipment. It serves as the originators and receptors of the digital communication.Fo...

Answered by: bashwin.87 on: Feb 12th, 2007

u can think DCE as a modem & DTE as a system

3 answers


Draw the pinout & functional block diagram?

Give the pinout & functional block diagram with the parts and controls.

Asked By: ramya | Asked On: Jul 26th, 2007


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