This is a liquid crystal display calculator with functions
specific for aviation.
- Pressure, Density Altitude
- Calibrated, True Airspeed
- Wind Speed, Direction, Course and Heading
- Time-Speed-Distance, Distance and fuel consumption
- Conversions between various units of measure
- Four basic mathematic functions
It uses two watch batteries. There is no AC adapter.
It was manufactured in the USA by Texas Instruments. The back place has the serial number 9786869 and the code ATA2180.