The control unit known as Flight Control is considered the most important part of the plane's performance, because this unit performs several tasks and consists of:
After that, there are several other sensors and chips that have different and multiple functions such as: current flow meter - a mini system for GPS navigation ... The plane control unit is the big part that the plane leans on in its flight and the explanation goes on here to explain the functions of the chips In it.
Sources :
Flight Control: http://pirofliprc.com/PyroDrone-F4-OSD_p_4547.html
Video Transmitter: http://pirofliprc.com/TBS-UNIFY-PRO-5G8-HV--RACE-SMA_p_3479.html
Antenna: http://pirofliprc.com/PyroDrone-Omni-Ufl-VTX-Antenna-RHCP_p_4265.html
* https://www.getfpv.com/learn/new-to-fpv/all-about-multirotor-fpv-drone-flight-controller/