Random scan display device - types of refresh monitors, Computer Graphics

Assignment Help:

Random Scan Display Device

The original cathode ray tube, developed in the late fifties and early sixties, produced charts and pictures, line through line on the tube surface in any of random order or direction specified, in a vectorial fashion. The e- beam was moved along the exact direction and for the exact length of the line as particular. For this purpose, the kind of device was termed as a Vector, Calligraphic or Stroke as it drew lines just like our ancestors drew letters as pictures, stroke by stroke. The method was the same to a hand-sketch or pen-plot.

The graphics commands are passed on to a display-file program produced by the computer and stored in the refresh storage region or buffer memory. The program is executed one time in all refresh cycle of about 1/30 sec. The e- beam is moved to trace the image line by line through a display processor. All line, if curved or straight is displayed through the activation of exact points among particular end-point via means of vector creators of the digital or analog type, the former being smoother, and the latter being cheaper and faster. Curved lines and text qualities are displayed like a series of short lines or through a sequence of points.

 


Related Discussions:- Random scan display device - types of refresh monitors

What does refreshing of the screen mean, What does refreshing of the screen...

What does refreshing of the screen mean? Some method is required for maintaining the picture on the screen. Refreshing of screen is completed by keeping the phosphorus glowing

Transformation for 3-d reflection, Transformation for 3-D Reflection F...

Transformation for 3-D Reflection For 3-Dimensions reflections, we should to know the reference plane, which is a plane about that reflection is to be considered. Remember tha

Write c program which takes points as input from mouse click, Write a C pro...

Write a C program which takes points as input from mouse clicks (left button) and then performs an action.  Apply your program to generate a closed polygon as follows: Every time a

Explain any ten types of artistic filters, Question 1 Explain any ten type...

Question 1 Explain any ten types of artistic filters Question 2 What is Freehand Tool? Explain the procedure of drawing lines and curves with freehand tool Question 3 Ho

Object oriented tools, Object Oriented Tools: In such authoring systems, m...

Object Oriented Tools: In such authoring systems, multimedia components and events turn into objects that live in hierarchical order of parent and child relations. Messages are pa

Numerically-controlled machines - cad and cam, Numerically-Controlled Machi...

Numerically-Controlled Machines: Prior to the development of Computer-aided design, the manufacturing world adopted elements controlled through numbers and letters to fi

Find out the matrix of projection, Find out the matrix of projection for ca...

Find out the matrix of projection for cavalier projection Answer: Cavalier projection corresponds to tan α = 1, leading to the following matrix.

Character generation, Ask question #Minimum how can we use stroke method me...

Ask question #Minimum how can we use stroke method method for character generation? 100 words accepted#

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd