no way do it want to drop power to zero, just so i can load a memory
--
The trees that are slow to grow bear the best fruit.
-Moliere, actor and playwright (1622-1673)
On 29 May 2008, at 17:49, David Cutter wrote:
Would your rule be covered if you had to hold in another button at
the same time as hitting the memory button? Or, say, turn the power
to zero before making memory additions...
David
G3UNA
In the world of ergonomics and man-machine interface design, there
is a rule: If an action will destroy information or a state than
cannot be restored with the same effort that it took to destroy,
then the system requires either (a) a "Un-Do" function of equal
simplicity, or (b) a confirmation step.
The choice between (a) or (b) depends on the consequences of the
unintended action during the time it takes to recover. For
example, a (hypothetical!) button that shuts down the jet engines
on an aircraft requires a confirmation step... because turning off
the engines until the pilot hits UnDo would be bad!
This rule applies to software as well as hardware.
-- Eric K3NA
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