http://www.arcavia.com/Software/ProgFont/
All I can say is, the letter "F" looks like the number "3", and I can't tell the difference between the "I" and the "T".
If I saw a page of ProgFont being labored upon by a programmer when I was young and considering my career options, I can say for certain that I'd never have joined the ranks. BASIC was mystifying enough when I was eleven.
Coincidentally with a similar name, some interesting fonts that are small which still use the English language are ProgyOptiS, ProgTinyT, and friends.. They can be seen here in a screen size war: http://z505.com/cgi-bin/qkcont/qkcont.cgi?p=Compact-Readable-Fonts