functionality. HP 40g (F1907A) was released in 2000 in parallel with the HP39g. The HP 40g's operating system is identical to the HP39g. Differences detected
calculators: HP-28S HP 48S / HP 48SX HP 48G / HP 48GX / HP 48G+ HP 49G hp 49g+ hp 48gII HP 50g (2006) HP Prime (2013) HP 38G HP39GHP 40G HP39g+ HP 39gs HP 40gs
function INVERSE(…) and the -1 operator was added for convenience sake in the hp39g, released in 2000. To do this the creators had to borrow one of the existing
to the soft pouches supplied with the HP 48 series. Almost the same hardware is also used by the HP39G and HP 40G. The last officially supported firmware