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ZAP51: an 87C51 programmer

ZAP51: an 87C51 programmer
In my first article I described the problems associated with developing 87C51 single-chip microcontroller applicaticns, especially the software. In the second article, I described a low-cost in-circuit emulator (leE) that provides the hobbyist with a route into simulation ~ conventionally the province of corporate/professional developers only. One final problem rernains for the hobbyist. Having developed the software in situ in the target environment, the single-chip microcontroller needs to be programmed. Most low-cost EPROM programmers have 28-pin sockets and can not, therefore, program the 40-pin 87C51.
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