Guy Leech on X: "It lives! This @Casio fx-4000P programmable calculator was bought for me by my late Dad's company as payment for writing some software (in compiled BASIC) for them whilst
fx-4000P - Search / X
CALCOLATRICE SCIENTIFICA CASIO Fx-3800 P vintage difettosa K 94 EUR 14,99 - PicClick IT
CALCOLATRICE CASIO FX-4000P di seconda mano per 35 EUR su Arganda del Rey su WALLAPOP