Re: TI-H: TI-89

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: TI-89
From: gussie@alaska.net (Grant Stockly)
Date: Sat, 21 Mar 1998 14:10:51 -0700
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: ti-hardware@lists.ticalc.org


Yep.  SRAM=Static Ram  DRAM=Dynamic Ram

>Not only that, but with 30-pin SIMMs, they're not static ram. They're
>Dynamic Ram. This means that you have to refresh them every once and a
>while or they will lose data.
>
>-- Jon Olson
>
>On Fri, 20 Mar 1998, Robert Brack wrote:
>
>>
>> Do you know what happens when you turn the computer off?  The memory erases
>> itself!  If you want to do that, you need to keep it powered CONSTANTLY,
>> because when it loses 'tricity, it becomes empty.
>>
>>
>> >Hey, the way that the memory works in all the calculators (except 92
>> >maybe) is all the memory is reset when the batteries are removed.  This
>> >means that this is ram and not flash ram.  Now a cheap way to expand the
>> >memory might be to use the old 1MB 30-pin SIMMs from computers.  Those
>> >are very easy to find at a very cheap price.  If someone had enough time
>> >to make those into a memory expander, then memory expanders would be a
>> >lot easier to build and there wouldn't ever be a problem of finding
>> >memory chips or parts being discontinued.
>>
>> Wait a minute, they don't make those anymore!  Try finding someone who will
>> sell one!
>>
>>

Prev: Re: TI-H: TI-89
Next: Re: TI-H: 89 Prcessor
Index(es):
- Main
- Thread