01 - What is input and output?

 1. In computing, input/output or I/O (or, informally, io or IO) is the __________ between an information processing system, such as a computer, and the outside world, e.g a human.





 2. Computers must receive output first in order to process and then input it.



 3. Refer to the image above. The CPU is often considered the _______ of the computer and is also sometimes called a chip.



  lymph node


 4. In the following labelled image, the number 1 is pointing at an input device.



 5. In the labelled image in the question above, the number 3 is pointing at an input device.



 6. No. 4 (in the labelled image above) is a mouse. This is an ____________.


  output device

  input device

  agro device

 7. Inputs are the signals or data received by the system and outputs are the signals or data ______________.

  deleted by the device

  sent from it

  received by it

  sent to it (sent to the input device)

 8. I/O devices are the pieces of _______ used by a human (or other system) to communicate with a computer.





 9. For instance, a keyboard or computer mouse is an output device for a computer, while monitors and printers are input devices.



 10. Devices for communication between computers, such as modems and network cards, typically perform _______________________________.

  both input and output operations.

  both processing and storage operations.

  only ouput operations.

  only input operations.

 11. Mouse and keyboards take physical movements that the human user outputs and convert them into _____________ that a computer can understand

  output signals

  storage signals

  processed signals

  input signals

 12. Similarly, printers and monitors take signals that a computer outputs as input, and they convert these signals into a representation that human users can understand.