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Screens & 2D Graphics Flashcards | StudBud
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Screens & 2D Graphics
Screens & 2D Graphics
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Crash Course Computer Science #23: Screens & 2D Graphics https://www.youtube.com/watch?v=7Jr0SFMQ4Rs
Flashcards
17 cards
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Questions
17
Answers
1
What was a significant drawback of using pixels in early computers?
They consumed too much memory
They were too large
They were too expensive
They were too bright
2
How did early computers render text?
Using lines
By storing tens of thousands of pixels
With bitmapped displays
With vector scanning
3
Which of the following is an example of an early vector display system?
Sketchpad
Vectrex
PDP-1
ASCII
4
What was the screen buffer used for in early computers?
Storing the commands of the computer
Saving ASCII characters
Storing vector instructions
Saving the current game level
5
What are the two ways you can draw graphics with CRTs?
Pixel and Dot matrix
Parallel and Perpendicular
Horizontal and Vertical
Vector and Raster Scanning
6
What was the primary technology used in early displays?
OLED
LED
CRT
LCD
7
What does CAD Software stand for?
Controlled Adaptive Drawing
Creative Aided Design
Computer Arts Design
Computer-Aided Drawing
8
What is VRAM?
Video Read Access Memory
Visual Random Allocation Memory
Video Random Access Memory
Vector Read Access Memory
9
What is the lowest intensity value on an 8-bit grayscale screen?
0
1
255
128
10
Which type of graphics rendering allows for complex, fast-moving graphics?
Dot matrix
Vector scanning
ASCII
Raster scanning
11
In vector scanning, the electron beam moves line to line, dot to dot, to draw an image.
True
False
12
What does the term "bitmapped displays" mean?
Displays with touch capability
Displays where bits in memory map directly to pixels on the screen
Displays with vector graphics
Displays with only black and white
13
What was the primary use of early circular computer screens?
Browsing files
Viewing mathematical calculations
Tracking program operations
Communications
14
How do LCDs update images on the screen?
Electromagnetic pulses
Using small magnets
Raster Scanning
Vector Scanning
15
What device was used to interact with graphics in the Sketchpad system?
Light pen
Keyboard
Mouse
Joystick
16
What is a character generator in terms of early graphics cards?
A machine for printing characters
A software that generates random character
A device to create new characters for video games
A hardware component that converted characters into raster graphics
17
Who won the Turing Award for creating Sketchpad?
Bill Gates
Steve Jobs
Ivan Sutherland
Alan Turing
