EPROM programmer

The design of the versatile EPROM programmer described in this article was among the winning entries of our 1996197 Software for Electronics Competition. Since then, a suitable circuit board has been designed, and the software was tweaked here and here in cooperation with the author. The result is a circuit which may be connected to the printer port on any modern PC, and enables the DIL versions of the popular EPROM series 27(C)64, 27(C)128, 27(C)256 and 27(C)512 to be programmed.