With output, you can send information out. So this can be connected with Scanner, Projector, Screen, Sound, etc. (They are information that will come OUT of the computer, so its called OUTPUT).
Input is information that goes into the computer. This can be USB device, Hard Drive, Microphone. (They are information that will go IN the computer, so its called INPUT).
Input is information that goes into the computer. This can be USB device, Hard Drive, Microphone. (They are information that will go IN the computer, so its called INPUT).