Re: TI-H: TI-89
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Re: TI-H: TI-89
once in a while is usually somewhere around 100 to 200 times a second...
(for fast 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!
>>
>>