CompuServe Messages

Without going into the details about the how and why, follow this formula. Suppose you want to use a 640×480 screen, and use a refresh rate of 70 Hz. What KHz spec would your monitor need to be able to display this? The formula is… horizontal lines x refresh rate x 1.05. In this case 480 x 70 x 1.05 = 35280, say 36 KHz. Now, try this for a 1024×768 screen. You'd have 768 lines, want a refresh rate of 70 Hz (non-interlaced) and so you'd need a monitor that can do (click click) about 56 KHz. Now you see how a 36 KHz monitor limits your possibilities. Don't worry about the info, a Picasso II can do 640×480 at 70 Hz quite well, and you will not blow up your monitor. With a Liyama 8617 monitor that has a 86 KHz spec, you can do 640×480 at refresh rates well over 100 Hz. Note that all of this has nothing to do with the number of colors. VGA moitors are analog devices, the number of colors depends on your card. Some can do 24bit up to 800×600, others up to 1024×768. This depends on the VGA chip used, the type and amount of memory etc. Hope I cleared things up for you. >F<riso Friso P. Gosliga | Auto CIS: 100341,464 – Internet: Friso.Gosliga@kub.nl | Pilot