Which computers control the flaps?

The correct choice involves the SFCCs, or Slat Flap Control Computers, which are specifically responsible for managing the operation of the flap system on the A320 aircraft. These computers are integral to controlling the extension and retraction of the flaps, ensuring that they operate within design parameters to optimize aircraft performance during various phases of flight, such as takeoff and landing.

The SFCCs process input from multiple sources, including pilot commands, aircraft configuration data, and other system parameters, to execute flap movements accurately. These computers also incorporate safety features that monitor the flap mechanism for faults and ensure that the system responds appropriately to changing flight conditions.

In contrast, other systems like the ELACs (Elevator and Aileron Computers), SECs (Slat and Elevator Computers), and FACs (Flight Augmentation Computers) have different primary functions related to flight control and augmentation, but do not control the flaps directly. Understanding the specific roles of these various computers is crucial for grasping the intricate systems that contribute to the aircraft's aerodynamics and operational safety.