Editing Tandy Pocket Computer (section)

==Design==
The models provided a short one-line [[dot-matrix]] [[LCD]] display, to show the current line of input text, or a segment of it containing the [[cursor (computers)|cursor]]. Character widths in these models varied from 12 characters in the PC-4 and PC-7 to 24 characters on most of the rest. The displays also included some way of indicating operational mode, scientific mode, and other states and conditions.

The Casio models included [[lower-case]] characters. These were only for use in [[BASIC#Syntax|PRINT]] statements, as lower-case commands and [[Variable (programming)|variables]] were not accepted as with almost all BASIC programming machines.

In general, the two specific lines were not cross-compatible, but there were compatibilities within lines. PC-1 programs would work unmodified on the PC-3 and on the PC-8 with changes for screen size, and PC-4 (26-3650B) programs would run unmodified on the PC-5, PC-6 and PC-7. The PC-2 was a unique architecture and was the only unit in the line allowing direct memory access with POKE, PEEK and CALL.