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HP-39GII: Will it become a desired collectible?
01-10-2015, 08:41 AM (This post was last modified: 01-10-2015 08:52 AM by jebem.)
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RE: HP-39GII: Will it become a desired collectible?
For those interested in hardware and electronics, this HP-39GII was covered in some detail on the other site oriented to Texas.

It includes a nice set of internal high resolution pictures of the machine as well here.
As far as I can tell from the pictures, this hardware is top notch quality, second to none.
Pity about the alleged buggy firmware, though.

Some hardware details:

SOC: SigmaTel / Freesclae STMP3770 (includes the ARM ARM926EJ-S processor)
SigmaTel Product Datasheet
Freescale STMP family comparison table

1Gbit Hynix NAND Flash Memory: H27U1G8F2BTR

EDIT to add aditional remark on Power Supply:

From one of the above photos, we can see that the four 1.5V battery cells are connected in parallel.
So this calculator operates at 1.5Volt DC, meaning that it could run with only one battery inserted.

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RE: HP-39GII: Will it become a desired collectible? - jebem - 01-10-2015 08:41 AM

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