555mc.exe
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An MS-DOS program to calculate resistor and capacitor values 
for the LM555/NE555 timer in astable and monostable modes.

This Michael Covington program was compiled by yours truly 
with old MS-DOS BASCOM version 2.00.3 compiler, the predecessor 
of MS-QuickBASIC.
--
Steve Walz  http://www.armory.com/~rstevew