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Completed new Membership Card

May 30, 2014

Here’s the old(bottom) and new(top) membership card CPU boards together.  The old card has the 1802 from my 1970s era Cosmac Elf and the new board has the one I got from Lee with my original MC kit.

Other differences: the new one has the blue resonator instead of an RC oscillator, the CD4093 IC has been replaced with a 74hc132 which is faster, and the RAM on the new card is as STK16C88 non-volatile SRAM so the olduino will have persistent program storage.  I also just used soldered in jumpers instead of headers and clips on the new board.

14-05-30 old and new

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