Larry Dighera writes:

But are Avidyne products that employ Windows OS reliable enough to
preclude their negatively impacting air safety?

Nothing that runs a Windows OS is suitable for safety-of-life
applications. This is no reflection on Windows; it's just that the
operating system is designed for general information processing use in
homes, offices, and schools ... not for process control, real-time
systems, or mission-critical applications.

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