12-04-2021, 02:47 PM
I have a HP65. It has a perfect apperance.
And it also work in normal calculation.
But when you touch the operation related to the ram such as program function or sto number into rigester. The screen will become black and no response at all.
And I must wait for nearly 10 miniutes then I can turn on it to do the normal calculation except ram operation.
Alough I am waiting for Tony’s new HP65 CPU board.
I still want to figure out what happened on my original CPU board.
I guess the ram has defected. But the 65 has a hybrid CPU which is different with the HP67 who has an ACT.
And it also work in normal calculation.
But when you touch the operation related to the ram such as program function or sto number into rigester. The screen will become black and no response at all.
And I must wait for nearly 10 miniutes then I can turn on it to do the normal calculation except ram operation.
Alough I am waiting for Tony’s new HP65 CPU board.
I still want to figure out what happened on my original CPU board.
I guess the ram has defected. But the 65 has a hybrid CPU which is different with the HP67 who has an ACT.