I don't want this interesting offer of free technical information to go to waste, so I'll ask a question.
I don't have any glass cockpit experience or training whatsoever, so this question isn't specific to the B777, but it's to get the ball rolling.
The digital data displayed on the screens is based on initial analogue data, such as raw pitot pressure and static pressure. At what point, and how is the information digitized? That is, is the pressure at each pitot and static source immediately converted to a number via a digital barometer, and then numerically compared to determine IAS, or is there an underlying "steam-driven" ASI, altimeter, etcetera, working with anaroid capsules? By what logic are the redundant pitot and static pressures compared?