On 12/08/09, Bill Sharpe posted:
> Gene E. Bloch wrote:
>> On Mon, 23 Nov 2009 14:05:28 -0800, Bill Sharpe wrote:
>>
>>> Peter Foldes wrote:
>>>>> The memory (RAM) is 2.00 GB but suddenly is showing to be 1.99 GB
>>>> Huh ?? It is One and the same
>>>>
>>>>
>>> Perhaps not quite the same, but not to worry for 0.01 GB, which is 10
>>> kilobytes. That's close enough for all practical purposes.
>>
>> Or maybe 10 megabytes. Still close enough, as you said :-)
>>
>>> Now back to worrying about health care...
>>>
>>> Bill
>>
> Back in the old days when I used a slide rule I was able to estimate where
> the decimal point or thousands separator should be in the answer. Obviously I
> have lost the knack of properly doing that digitally with tera, giga, mega,
> and kilo...
> Bill
When I first learned slide rule, there was a chapter or a page or
something that told you how to keep track of the decimal point. It had
rules like "If the slide sticks out to the left, move the decimal point
to the right (or was it left)". I never could keep it straight, even
back then. Too confusing.
So here's what I did: I did a rough calculation with pencil and paper
first. I'd get something like 1320.0 that way, whereas the slide rule
gave me a result like 156 (I told you it was rough!), so I knew the
answer was 1560. OTOH, if the slide rule gave me a number like 622, I
was pretty sure I'd screwed up, so the method served two purposes.
BTW, my error was almost always in the slide rule calculation :-)
--
Gene Bloch 650.366.4267 lettersatblochg.com
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