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On Sat, 8 Jan 2000 19:23:01 +0100, you wrote:
>-Your PC -main- clock can only be accessed via your BIOS software on start up
> (the CMos settings software, eg the Computer Management operating system)
> and this clock is usualy stored in a chip (most will have it "baked" in a chip itself)
> on the motherboard, and it runs on the on the motherboard build (tiny round flat) battery.
As a typical (stupid) Windows user, I have to admit that I didn't
make a difference between all those clocks. What I'm talking about is
what I see, and that seemingly is the Windows clock:
>-Your Windows clock (protected mode) can be accessed via the Window's Control Panel,
> via the Window's RUN box(Win Prompt) and via the Window's VDOS box(VDOS Prompt).
> It gets its information from the real PC clock(above), and presents this as though it is
> the PC clock(eg a VPC clock, a virtual clock), now on your DeskTop (eg thus in Windows).
>
>-Your DOS clock (real mode) can be accesed via the DOS prompt, eg with the DATE and
> TIME commands.
Can you please tell me, what DOS could be? ...B-))...
>Excel doesn't get mentioned here, because it is only getting "information" from Windows
>and its Window's clock, eg it cannot directly access the Windows clock, let alone your
>PC clock, let alone your PC's BIOS.
>It is "read only" information given by Windows.
That imo is the way it _should_ work, but it's not in accordance to
reality.
Again and again my system tests in Excel make changes to the Windows
clock. To be more precise: Changes to the _date_ are made in
accordance to the date of the system test when my Excel/VB procedures
step through an out-of-sample back-test. The time-of-day is untouched.
It may be unbelievable, but this effect shows up at least on two
computers (Win NT and Win98) and two versions of Excel (97 and 2000).
mfg rudolf stricker
| Disclaimer: The views of this user are strictly his own.
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