There are two main types of flight computer. The smaller versions are generally used for the Private Pilot like the Pooleys CRP-1 and AFE ARC 1. Our professional computers are larger and handle more complex calculations. These "Whiz Wheels" are designed for the ATPL pilot.
Flight Computers (E6-B) of all types are primarily used on the ground during flight planning. Pilots will find they also provide functionality in calculating Speed, Time, Distance, Weight, Fuel, Pressure and Density Altitude, Conversions, Heading, Drift, Wind calculations. Our range of flight computers come in laminated card, High density plastic or stainless steel.
This american video while relating to FAA exams is actually very good at explaining how to use a Flight Computer