Understanding Output Devices in Computing

Computer devices can be broadly categorized as either input devices or output devices. Input devices are used to send data or signals to a computer, while output devices are used to receive data from the computer and display it in a human-readable form or physical copy.

Distinguishing Input and Output Devices

Let's look at the common devices mentioned in the options and classify them:

• Scanner: An input device. It reads images or text from a physical document and converts them into digital data for the computer.
• Printer: An output device. It receives digital data from the computer and produces a physical copy on paper.
• Monitor: An output device. It receives digital data from the computer and displays it visually on a screen.
• Keyboard: An input device. It is used to type text, numbers, and commands into the computer.
• Mouse: An input device. It is used to point, click, and drag items on the screen, sending commands to the computer.
• Plotter: An output device. Similar to a printer, but typically used for printing vector graphics, like architectural blueprints or engineering drawings, often on large sheets of paper.

Analyzing the Given Groups

Now, let's examine each group provided in the options to determine which one consists only of output devices:

• Option 1: Scanner, Printer, Monitor

  This group includes a Scanner (Input), a Printer (Output), and a Monitor (Output). Since it contains an input device (Scanner), this group does not consist of only output devices.

• Option 2: Keyboard, Printer, Monitor

  This group includes a Keyboard (Input), a Printer (Output), and a Monitor (Output). Since it contains an input device (Keyboard), this group does not consist of only output devices.

• Option 3: Mouse, Printer, Monitor

  This group includes a Mouse (Input), a Printer (Output), and a Monitor (Output). Since it contains an input device (Mouse), this group does not consist of only output devices.

• Option 4: Plotter, Printer, Monitor

  This group includes a Plotter (Output), a Printer (Output), and a Monitor (Output). All three devices in this group are classified as output devices.

Based on the analysis, the group consisting of Plotter, Printer, and Monitor is the only one where all listed devices are output devices.