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Microphone

A microphone lets you record your voice or other sounds on the computer. You
can use it for video calls, recording music or podcasts, or talking to helpers like
Siri or Alexa. It turns sound into digital signals the computer can understand.

Timeline

I/O ports connect computers to external devices for data transfer, like USB, HDMI, and SATA.
Peripherals add extra functions to a computer and include input and output devices.

Input devices like mouse and keyboard let users input data to the computer.
Output devices like monitors and printers show or produce computer results.
Special peripherals such as graphics cards and microphones improve specific tasks.

Choose the correct option.

1. What does USB stand for?

a. Universal Serial Bus b. United System Board

c. Universal Storage Block d. Uninterrupted Signal Band
2. Which type of signals does an HDMI port transmit?

a. Video b. Audio
c. Both a. and b. d. Data files

3. Which of the following is an example of an output device?
a. Keyboard b. Mouse

c. Monitor d. Scanner

4. Which device would you use to print a document?
a. Monitor b. Printer

c. Keyboard d. Speaker
5. Which device projects computer images onto a large surface?

a. Projector b. Keyboard
c. Printer d. Speaker

Tick ( ) the correct statements and cross ( ) the wrong ones.

1. I/O ports allow a computer to communicate with external devices.

#I/O Ports and Peripherals 21