DM-15L Review

[Commie]

(11-11-2024 10:31 PM)carey Wrote:  It's possible that we may be mixing up hardware and software. The recent mix of 15C calculators (e.g., 15C CE, DM15L, PX-15C) are not running on 40 year old hardware (the 15C CE runs programs up to 200 times faster than the original 15C) and have benefited from the the evolution of electronics.

A, would be, hp15c clone manufacture has no choice but to use the latest technology. As you are probably aware, clone designers emulate the original hp 4-bit NUT processor on an ARM/AVR processor which are much faster than the original, however, this speed increase is debatable because lcd screens are very slow, also high speeds shorten the keyboard debounce time and so the only option open to clone designers, who deploy emulation, is to slow the cpu down.

Because emulation is utilised, such as the hp15ce, the calculator offers nothing new over the original except some speed increase and extra ram and as I have said before, the original hp's software or firmware are getting old when compared to say the ti30x pro at 1/5th the price.

Cheers
Darren