A minor difference between the HP 15c CE and the original HP-15C (and LE)

[Werner]

Hi J-F,
I notice that my DM15L blinks at 12MHz, but not at 48Mhz.
That is to say, it doesn't blink for 'fast' operations like X<>Y, SQRT
But it does blink (@48Mhz) for eg 10^x if the argument is not an easy one.
1 10^x -> no blink
5 sqrt -> no blink but a subsequent 10^x does blink.
That would suggest that the blinking happens on a regular interval (independent of clock speed), and if the operation is too fast, it will be completed before the display can blink.
Since the CE is many times faster still, you probably won't see any blinking for any 'normal' function (not the solve and integrate).

Cheers, Werner