PART 4

• RESOLUTION o used (inconsistently) for number of pixels on screen (width x height) (DPI)
• ASPECT RATIO o ration between width and height o 4:3 for most screens, 16:9 for wide- screen TV
• ANTI-ALIASING • softens edges by using shades of line color • also used for text
• JAGGIES • diagonal lines that have discontinuities in due to horizontal raster scan process.
• Cathode Ray Tube • used in TVs and computer monitors. • X-rays: largely absorbed by screen
• Liquid Crystal Displays • Smaller, lighter, and … no radiation problems. Commonly referred to as flat-panel displays.
• Direct view storage tube (DVST) • Similar to random scan but persistent => no flicker
• Random Scan Display • draw the lines to be displayed directly • rarely used except in special instruments
• LARGE DISPLAYS

  used for meetings, lectures, etc.
• PROJECTED RGB lights or LCD projector
• VIDEO WALLS lots of small screens together
• PLASMA usually wide screen