Wikipedia sayings about code name 17f

1.List of airports by IATA airport code: F

List of airports by IATA airport code: A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z The DST column

https://en.wikipedia.org/wiki/List of airports by IATA airport code: F

2.Binary code

A binary code represents text, computer processor instructions, or any other data using a two-symbol system. The two-symbol system used is often "0" and

https://en.wikipedia.org/wiki/Binary code