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TASC Computer Graphics and Design study materials
TASC Computer Graphics and Design study resources

TASC Computer Graphics and Design cheat sheet

TASC Computer Graphics and Design · Keep the key ideas within reach.

Quick reference

Computer Graphics and Design Fundamentals

  • Raster graphics store images as a grid of pixels; resolution is measured in pixels per inch (PPI), and scaling up causes pixelation because new pixels are interpolated.

  • Vector graphics represent shapes with mathematical paths (points, lines, curves) and scale without quality loss; common formats include SVG, AI, and EPS.

  • RGB is an additive color model used for screens; CMYK is a subtractive model used for print; converting RGB to CMYK can shift colors because their gamuts differ.

  • Color depth (bit depth) determines the number of colors per pixel: 8-bit = 256 colors, 24-bit = 16.7 million colors (true color).

  • The color wheel relationships: complementary colors are opposite (high contrast), analogous colors are adjacent (harmonious), triadic colors are evenly spaced (vibrant).

  • Aspect ratio is width:height (e.g., 16:9, 4:3); changing it without cropping distorts the image.

  • DPI (dots per inch) applies to print output; PPI applies to screen display; a higher DPI value in a print file means more detail per inch.

  • File formats: JPEG uses lossy compression for photos; PNG uses lossless compression with alpha transparency; GIF supports animation and limited 256 colors; SVG is XML-based vector.