telephone
An optical line termination (OLT), is a device which serves as the service provider endpoint of a passive optical network. It provides two main functions: - To perform conversion between the electrical signals used by the service provider's equipment and the fiber optic signals used by the passive optical network. - To coordinate the multiplexing between the conversion devices on the other end of that network (called either optical network terminals or optical network units).
A write head is the part of an electromechanical device which converts electrical signals into digital or analogue information stored on a magnetic or optical medium.
A device that transfers a signal from one form to another is called a transducer. Transducers can convert various types of signals, such as electrical, mechanical, thermal, or optical signals, into different forms for communication or processing in electronic systems.
No, its not an optical storage device.
telephone
It is not an optical device. C D ROM or DVD are optical devices. Whereas a digital memory card is solid state device.
magnetic storage device
An Electronic Device
modem is the device that carries digital signals
CD-R
Input device
depends on the purpose of the device