What characterizes a stepper motor in the context of positioning?

A stepper motor is characterized by its ability to allow for precise positioning, which is a fundamental aspect of how it operates. This type of motor divides a full rotation into a large number of steps, permitting it to move in small, discrete increments. This capability is essential in applications where accurate positioning is critical, such as in robotics, CNC machines, and 3D printers.

The precise control over the movement achieved through step angles means that the motor can rotate to a specific position and hold that position without the need for continuous feedback systems, distinguishing it from other types of motors. This makes it particularly suitable for applications where repeatable movements are required, as each step corresponds to a specific angle of rotation.

The other options describe attributes that do not typically characterize stepper motors. Continuous motion is more associated with servo motors or other types of motors designed for rotational applications without discrete stopping. High speed operation is not a defining feature of stepper motors; they generally have limitations on maximum speed due to their stepping nature. While it's true that stepper motors can operate without feedback loops (open-loop control), such operation does not define their primary characteristic as precisely as their ability to allow for accurate positioning.