This series includes pockets derived from the PB-100
Size : 165 x 71 x 10 mm
A 12-digit screen
a programming language very rudimentary
They differ one from the other :
by standard or extended memory (OR-X modules)
by the addition of an extra function key F
by the availability of S+EXE combination ("previous" function)
by the str$( ) function
by the DATA BANK functions
The keys are whether black whether white and the hull presents various tints.
The F key permits direct access to some mathematicals functions written besides character keys.
When it is not available, it is possible to add the F key by making a hole on the right of the S key and putting a spare key. This has not been studied on models including Data Banks funtions.
The FX models have F Key, the PB ones haven't, like for the PB-410 series.
The "Previous" key
On models presenting a little triangle above the Enter key, the S+EXE combination allows to move back in the listing (mode 1).
On data bank models, this combination allows to edit previous data while editing.