https://web.archive.org/web/20120206091422/http://mckoss.com...
>Tiny (3x5) Font
>Created for the Apple II program The Terminal. Copyright (c) 1981 Michael C. Koss
>In 1981 I wrote a terminal emulator for the Apple II. At the time, the Apple II could only display upper case characters. I used the hi-res display (280 x 192 pixels!) to display my own character set. In order to come close to showing an 80-column display, I created a truly tiny font, displaying the full ASCII character set (upper and lower case).
>I created a font within a 3x5 pixel dimension, allowing the display of 32 lines of 70 characters each. The font definitely takes some training and getting used to (especially recognition of characters that use descenders); but I found it to be quite readable after a while.