Premise: The Sharp PC-E220 was a 1991 pocket computer from Sharp Corporation featuring 32 kB RAM, 128 kB ROM and a 3.072 MHz CMOS-SC7852 CPU which was Z80A compatible. The display was able to display 4 lines x 24 characters/144 x 32 pixels. Programming languages were BASIC and Z80-Assembler.
Hypothesis: The Sharp PC-E220 was a pocket computer with 128 kB RAM