Casio PB-100 Personal Computer
Comes with sleeve.
The PB-100 from 1983 represents Casio’s step towards “real” pocket computers. While its ancestor, the FX-702P, was still called “Programmable Calculator”, the PB-100 proudly bears the title “Personal Computer”.
The Casio PB-100 is a programmable pocket computer with 12 digits precision and algebraic logic. It has 53 keys, and an LCD (liquid crystal) display. It runs Casio BASIC.