Friday 30 August 2013

Monday 19 August 2013

Advance Computer Architecture : solved mdu question paper dec. 2012

Q. 1 (a) What is state and cycle?
Answer:
State: It is a particular configuration of storage units like Registers or Memory, and a state transition is a change in that configuration.
Cycle: It is the Time between state transitions. If storage registers are being reconfigured , its called Machine Cycle. If Memory is being reconfigured it is called Memory Cycle.

Q.1(b) Differentiate between Horizontal and Vertical instruction.
Answer: In micoprogrammed machine , the microinstruction define the control point values required throughout the system as well as control the sequencing of interpretation of an operation.

  •        In most machines, the control points are encoded in some fashion in microinstruction representation, making more efficient use of microprogram storage. Some design highly encode the control point actions so that only afew actions may be activated in a particular cycle. This type of microinstruction are called vertical microinstruction and requires an additional decoder to process the encoded control point information.
  •        In contrast, other designs partition control point actions into many different classes, any of which can be activated within any given cycle. This type of microinstruction is referred as a horizontal microinstruction.

Wednesday 17 July 2013

Do you the Difference B/W JPEG , GIF, PNG Image formats

Reference: http://www.webopedia.com/DidYouKnow/Internet/2002/JPG_GIF_PNG.asp

JPEG/JPG

  Joint Photographic Experts Group, the original name of the committee that wrote the standard. JPG is one of the image file formats supported on the Web. JPG is a lossy compression technique that is designed to compress color and grayscale continuous-tone images. The information that is discarded in the compression is information that the human eye cannot detect. JPG images support 16 million colors and are best suited for photographs and complex graphics. The user typically has to compromise on either the quality of the image or the size of the file. JPG does not work well on line drawings, lettering or simple graphics because there is not a lot of the image that can be thrown out in the lossy process, so the image loses clarity and sharpness.

GIF

  Graphics Interchange Format, another of the graphics formats supported by the Web. Unlike JPG, the GIF format is a lossless compression technique and it supports only 256 colors. GIF is better than JPG for images with only a few distinct colors, such as line drawings, black and white images and small text that is only a few pixels high. With an animation editor, GIF images can be put together for animated images. GIF also supports transparency, where the background color can be set to transparent in order to let the color on the underlying Web page to show through. The compression algorithm used in the GIF format is owned by Unisys, and companies that use the algorithm are supposed to license the use from Unisys.

PNG

  Portable Network Graphics, the third graphics standard supported by the Web (though not supported by all browsers). PNG was developed as a patent-free answer to the GIF format but is also an improvement on the GIF technique. An image in a lossless PNG file can be 5%-25% more compressed than a GIF file of the same image. PNG builds on the idea of transparency in GIF images and allows the control of the degree of transparency, known as opacity. Saving, restoring and re-saving a PNG image will not degrade its quality. PNG does not support animation like GIF does.
*Unisys announced in 1995 that it would require people to pay licensing fees in order to use GIF. This does not mean that anyone who creates or uses a GIF image has to pay for it. Authors writing programs that output GIF images are subject to licensing fees.

Saturday 29 June 2013

How Optical mouse works

The main idea about optical mice is that they use a very small camera like device. This camera takes 1500 pictures every second and the digital signal processor analyzes those images. The sensor that takes images is CMOS sensor. CMOS stands for complimentary metal-oxide semiconductor. Red light emitting diode is used for light bouncing from the surface. The idea is simple. Diode emits the light, light bounces off the surface and then goes to the CMOS sensor. The CMOS sensor sends 1500 surface images per second to the DSP (digital signal processor). DSP analyzes pictures and detects the movement. The movement is detected because of the pattern changes in provided pictures. The distance and the direction are evaluated by DSP and the coordinates are sent to the computer. Now it is computer's task to move the cursor to the position needed. 

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For MDU old Question paper

Old question paper are the mirror to the actual study you did. They provide you the parameter of Examination preparation so it is always advisable to have a look on the previous year question papers.
MDU old Question paper

Tuesday 18 June 2013

what is trap or an exception

A trap is a software generated interrupt caused either by an error ( for example, divison by zero or invalid memory access) or by specific request from a  user program that an operating system service.

Saturday 15 June 2013

Computer Aided Process Programming : Mechanical: By Vinod Dhull , Asstt. Professor, HIT, Bahadurgarh

http://www.erp4learn.com/index_files/CAPP_PRESENTATION.PPT
 Once the design of the product is evolved, its manufacturing necessitates planning and scheduling of the various processes of the manufacture so that the product is made to right specifications and delivered at right time and at minimal cost.

The cycle from concept to design , planning, production, quality control and feedback to design goes on in which one can easily understand the crucial role of process planning.

Friday 14 June 2013

Dr. Vinay Goyal: Adavance Computer Architecture

Dr. Vinay Goyal: Adavance Computer Architecture: Course Objective: The objective of this course is to provide a through discussion of fundamentals of computer architecture . After doi...

Sunday 9 June 2013

Asymmetric multiprocessing vs symmetric multiprocessing

ASYMMETRIC multiprocessing:    In this each processor is assigned a specific task. Amaster processor controls the system;  the other processors either look to master for instruction or have predefined tasks. This scheme defines master slave relationship.

Symmetric multiprocessing:   (smp) in this each processor perform all tasks within the operating system.  SMP means that all processor are peer, no master slave. 

Wednesday 29 May 2013

Let learn Chemistry for 10+1

Follow the link for a informative assignment for the students of 10+1
www.erp4learn.com/ teaching materials

Monday 29 April 2013


“Knowing is not enough; we must apply. Willing is not enough; we must do.”

Sunday 28 April 2013


Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

 

  A. rem = 3.14 % 2.1;

  B. rem = modf(3.14, 2.1);

  C. rem = fmod(3.14, 2.1);  

  D. Remainder cannot be obtain in floating point division.

              ANS:C

Sunday 21 April 2013

Mathematician Shakuntala Devi

Mathematician Shakuntala Devi ko Sat-2 naman for sharing her knowedge with the world. she is simple great

Tuesday 16 April 2013

Wednesday 10 April 2013


How will you free the allocated memory ?

 
   A. remove(var-name);

   B. free(var-name);  

   C. delete(var-name);

   D. dalloc(var-name);

1.  Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

  A. rem = 3.14 % 2.1;

  B. rem = modf(3.14, 2.1);

  C. rem = fmod(3.14, 2.1);  

  D. Remainder cannot be obtain in floating point division.

 

Friday 22 March 2013

History of Internet

"In the Beginning, ARPA created the ARPANET. And the ARPANET was without form and void. And darkness was upon the deep. And the spirit of ARPA moved upon the face of the network and ARPA said, 'Let there be a protocol,' and there was a protocol. And ARPA saw that it was good. And ARPA said, 'Let there be more protocols,' and it was so. And ARPA saw that it was good. And ARPA said, 'Let there be more networks,' and it was so."
-- Danny Cohen

Tuesday 5 February 2013

Is student actually learning in Engineering colleges

Students in Engineering colleges are not attanding their classes seriously. So the practical implementation is becoming poor. so, it is the duty of we teachers to motivate the students to learn from lessons they are taking in their theory classes 
This blogspot is generated to share the knowledge in the field of Computer science and Engineering and Mathematics

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