Does anyone know how many memory bits are in a Mostek MK4027N? Its also labelled S7748A. I'm guessing its either 4K x 1, or 16K x 1, which would mean the pdp8/a memory board I have is either the 32K or 128K model. I suppose it could be 2K x 1 as well (there are only 3 ram sizes for this board). -Lawrence LeMay