Fuel management systems?

From:         edwardsj@newsfeed.vivanet.com (James Edwards)
Organization: news.vivanet.com
Date:         24 Jun 96 12:24:51 
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What kind of fuel management systems are being used in the new aircraft.
I know that older ships just had some analog gauges to show fuel rate.

Can anyone tell me some of the data that is available to the flight crew
that is calculated from the flow rate i.e. quantities that are shown,
warnings that are given, and what nav units are also tied into..  Also how
much of this is really used by the pilots, what do they really want to
know about the fuel system.