Win OS & Hardware

Monitors Most desktop displays use a cathode ray tube (CRT), while portable computing devices use liquid crystal display (LCD), light- emitting diode (LED), or gas plasma

Monitors Display technology - Choices are mainly between CRT and LCD technologies. Cable technology - VGA and DVI are the two most common. Viewable area (usually measured diagonally) Aspect ratio and orientation (landscape or portrait) Maximum resolution Dot pitch Refresh rate Color depth

Monitors Cable Technology HD15/DB15 1: Red out6: Red return (ground)11: Monitor ID 0 in 2: Green out7: Green return (ground) 12: Monitor ID 1 in or data from display 3: Blue out8: Blue return (ground)13: Horizontal Sync out 4: Unused9:9:14: Vertical Sync 5 10: Sync return (ground) 15: Monitor ID 3 in or data clock

Monitors Cable Technology - DVI

Monitors Viewable Area: Common Monitor Sizes are 14”, 15”, 17”, 19” 20”, 21”, 22”, 24” 32”, 42”, 50”, 60”

Monitors Viewable Area: Measured Diagonally CRT/LCD – 4:3 Ratio LCD/Plasma – 16:9 Ratio

Monitors 4:3 (1.33:1) vs 16:9 (1.85.1) Aspect Ratio

Monitors HDTV Differences 1) Wider images 2) Much more detailed pictures 3) 5.1 channel CD-quality Dolby Digital (AC-3) surround sound 4) The ability to send data directly to a screen or to a PC as a download (The actual HDTV transmission is based on a 19.3-Mbps digital data stream.)

Monitors HDTV 10x more picture detail than NTSC 480p - 640x480 pixels progressive 720p x720 pixels progressive 1080i x1080 pixels interlaced 1080p x1080 pixels progressive

Monitors HDTV In an interlaced format, the screen shows every odd line at one scan of the screen, and then follows that up with the even lines in a second scan. Since there are 30 frames shown per second, the screen shows one half of the frame every sixtieth of a second

Monitors HDTV Progressive scanning shows the whole picture, every line in one showing, every sixtieth of a second. This provides for a much smoother picture, but uses slightly more bandwidth.

Monitors HDTV Sony Wega 42" XBR Plasma TV with built-in HDTV tuner

Monitors HDTV Digital Television Prospects: 3D Internet Interactive Television & Movies VotingCommunicationEtc…

Monitors Maximum Resolution Resolution refers to the number of individual dots of color, known as pixels, that are contained in a display

Monitors Dot Pitch The measure of how much space there is between a display's pixels

Monitors Dot Pitch: Dot Pitch Approx. number of pixels/cm 2 Approx. number of pixels/in 2.25 mm1,60010, mm1,4449, mm1,3698, mm1,2257, mm1,0246, mm3612,256 1 mm100625

Monitors Dot Pitch: The smaller and closer the dots are to one another, the more realistic and detailed the picture appears

Monitors Refresh Rate The number of times that the image on the display is drawn each second

Monitors Refresh Rate Refresh rates are very important because they control flicker, and you want the refresh rate as high as possible. Too few cycles per second and you will notice a flickering, which can lead to headaches and eye strain

Monitors Refresh Rate InterlacingNon-Interlacing

Monitors Color Depth 4-bit8-bit16-bit24-bit32-bit

Monitors Typical CRT/LCD Monitors

Monitors Questions?

Monitors Assignment 02 Look some information about nanotube technology as it relates to computer technology Due: Friday Sep. 16, 2005