Saturday, July 24, 2010

Sanity Check

Just as a sanity check I wanted to see how many characters I could put on a very small TV and still have the text be readable.

First I tried 32 characters per line, but that really is not enough and makes reading difficult. So I tried 64 characters, that was unreadably small on a 5 inch tube TV.

So I settled on 48 characters per line.

First I tried 24 lines, but the text was so close together that I couldn't find the start of the next line while reading. So I kept the text the same size, but put a 1/2 character space between each line. That looked good.

So I ended up with 16 lines of 48 characters. Then I make the line smoothly scroll up the screen. I still occasionally got lost finding the next line, so I put a gray bar across the screen after every three lines. Works perfectly. I never get lost now.

Oh, and the display is bitmapped. So it would be possible to show black & white graphics. The resolution is 384 x 192. That could in handy for science books and stuff.

Well, that wraps up the display part.

PropBasic Video Test Source Code

Bean

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