## Graphics

 Question 1

A graphics card has on board memory of 1MB. Which of the following modes can the card not support?

 A 1600 × 400 resolution with 256 colours on a 17 inch monitor B 1600 × 400 resolution with 16 million colours on a 14 inch monitor C 800 × 400 resolution with 16 million colours on a 17 inch monitor D 800 × 800 resolution with 256 colours on a 14 inch monitor
Operating-Systems       Graphics       GATE 2000
Question 1 Explanation:
For every option we need to calculate memory.
Option A:
1600×400 = 64000 = 640 KB
256 colours 8 bits = 1 Byte
⇒ 640×1 = 640KB (we have 1MB)
Option B:
1600×400 = 640KB
16 million = 24 bits = 3 bytes
⇒ 640×3 = 1920KB (Not enough)
Option C:
800×400 = 320 KB
16 millions = 3 bytes ⇒ 320×3 = 960 KB (we have 1MB)
Option D:
800×400 = 320 KB
256 colours = 1 Byte ⇒ 320×1 = 320 (we have 1MB)
 Question 2
Which of the following is not a basic primitive of the Graphics Kernel System (GKS)?
 A POLYLINE B POLYDRAW C FILL AREA D POLYMARKER
Computer-Organization       Graphics       UGC NET CS 2015 June Paper-3
Question 2 Explanation:
Graphics Kernel System (GKS): ​ GKS provides a set of drawing features for two-dimensional vector graphics suitable for charting and similar duties. The calls are designed to be portable across different programming languages, graphics devices and hardware, so that applications written to use GKS will be readily portable to many platforms and devices.
The five main primitives in GKs are :
● Polyline: ​ which draws a sequence of connected line segments.
● Fill Area: which displays a specified area.
● Cell array: which displays an image composed of a variety of colours or grey scales.
● Polymarker: which marks a sequence of points with the same symbol.
● Text: which draws a string of characters
There are 2 questions to complete.

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