Which of the following peripheral devices are considered as only input devices?

(A) Speaker

(B) Barcode Reader

(C) MODEM

(D) Graphic Tablet

(E) Microphone

Choose the correct answer from the options given below :

Key Points

•  Input device: It lets the user send data, information, or control signals to a computer. A computer's Central Processing Unit (CPU) receives the input and processes it to produce the output.
• Some of the popular input devices are:
  • Keyboard
  • Mouse
  • Scanner
  • Barcode Reader:
    • A Barcode reader or scanner is an electronic input device that can scan and decode barcodes.
    • These devices use optical technology such as infrared light.
  • Graphic Tablet: 
    • A graphics tablet (also known as a digitizer, digital graphic tablet, pen tablet, drawing tablet, external drawing pad or digital art board) is a computer input device that enables a user to hand-draw images, animations and graphics with a special pen-like stylus, similar to the way a person draws images with a pencil.
  • Microphone:
    • The microphone is an input device to input sound that is stored digitally.
    • The microphone is used for various applications, such as adding sound to a multimedia presentation or mixing music.​

Additional Information

• MODEM:
  • A modem is considered an input/output device because a modem sends and receives data simultaneously.
• Speaker:
  • A computer speaker is an output hardware device that connects to a computer to generate sound.

Therefore we can say that the correct answer is (B), (D) and (E) only