HP21 uses same RAM chip as HP25?

[calc-calcs]

Hello Didier,

Yes I saw that table and actually printed it out on PDF to have it locally. Just wanted to confirm its accuracy as it seemed strange that the HP21 was not mentioned in the list for that RAM chip along the 22 and 25. I suppose the 21 uses a different chip, but it is not even listed as using any other RAM chip at all, or maybe that part is just missing from the list. Even tough its not programmable, I would think it still needs RAM for the single register. On that list I can only find the ACT (2) of the HP21, but no RAM is listed for it.

BTW at the moment to me that site where the list is hosted is not loading at all. I am getting a server timeout error, or its probably just a temporary condition from my location. Good to have that PDF version I printed.

Thanks for your input.
Alex