Yes, it is also and input device. I/O device.
A computer is an output device.
Define the output device in computer?
I believe it is both an input and an output device, but I will check
An input output device that modulates and demodulates is a modem.
It is both an Input and an Output device.
A modem (Modulator-demodulator) is both. It allows you to input data (download) and output data (upload).
A computer is an output device.
Define the output device in computer?
I believe it is both an input and an output device, but I will check
A modem is one of those devices that is both an input and an output device.
both
An input output device that modulates and demodulates is a modem.
It is both an Input and an Output device.
A keyboard is an input device. A modem is both an input and an output device. A CPU is the central processor and is connected to both input and output devices but is itself neither.
Data flows through the modem both ways.
An output device is an extra device to a computer is attaches to the computer externally and has a function of taking formation from or through the computer. Examples are a monitor, printer, or modem.
If by "computer output" you mean data (whether documents, music files, etc.) then the answer is No. Even if you mean is it a computer output "device", then again the answer is No. It passes data between computers, and since "output" involves putting information into forms directly accessible to humans, a modem is not an output device.