1) Some of the paper they carry gets looked at rarely. Other things like SIDS, STARS, Approach plates and airpot diagrams get looked at virtually every flight.
2) The "operator" can approve the use of electronic devices once they satisfy themselves that such operation is safe. Easy to do with 2 x iPads in the cockpit versus potentially millions of combinations of devices and locations throughout the rest of the aircraft.
3) The FAA approved the use of electronic devices instead of carrying the paper versions. The "operator" still has to approve the device(s) in specific aircraft.
4) There are electronic displays in the cockpit, that can display various information. But not a "PC." For emergencies, in the most modern setups, when the system detects a problem, it displays the appropriate emergency procedures on one of the displays.
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