What type of device is specifically designed to perform trigonometric computations electrically?

The device designed specifically to perform trigonometric computations electrically is known as a resolver. Resolvers are a type of rotary electrical transformer used for measuring angular positions. They work by generating sine and cosine signals corresponding to the angular position of an object, making them integral in applications requiring precise rotational measurements, such as in motors and avionics.

Resolvers effectively convert angular data into electrical signals that represent sine and cosine values, facilitating calculations related to trigonometry. This capability is crucial in systems where precise control and position feedback are necessary, such as robotics and aerospace technologies. The design and function of the resolver revolve around its ability to deliver these essential trigonometric computations in a reliable manner, distinguishing it from the other devices listed in the choices.