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HP48GX Expansion
05-27-2017, 06:26 AM (This post was last modified: 05-27-2017 07:05 AM by Chris Dreher.)
Post: #6
RE: HP48GX Expansion
There are also FRAM cards, available sometimes on eBay in 128KB and 512KB sizes. These are also bear circuitboard cards. Unlike a normal RAM card that requires a small battery to preserve data when the card is removed, a FRAM card does not require a small battery to preserve its data. The downside is that FRAM is a new technology and thus these cards cost more that typical. Also, because FRAM is new technology, some folks are unsure about it.

There is a long thread about HP48 FRAM cards here:

FYI, I have not tried out any FRAM cards to verify them but suspect they are just fine to use.
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Messages In This Thread
HP48GX Expansion - SteveH - 05-26-2017, 10:24 AM
RE: HP48GX Expansion - Han - 05-26-2017, 02:37 PM
RE: HP48GX Expansion - SteveH - 05-26-2017, 05:17 PM
RE: HP48GX Expansion - rprosperi - 05-26-2017, 09:29 PM
RE: HP48GX Expansion - Han - 05-26-2017, 07:27 PM
RE: HP48GX Expansion - Chris Dreher - 05-27-2017 06:26 AM

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