Question

8. Explain the following:
(i) Microphone
(iii) Track ball​

Answer 1

Answer:

hope this help you thanks

Answer 2

microphone - A microphone is a device that translates sound vibrations in the air into electronic signals or scribes them to a recording medium. Microphones enable many types of audio recording devices for purposes including communications of many kinds, as well as music and speech recording.

track ball- A trackball is a computer cursorcontrol device used in many notebook and laptop computers. The trackball is usually located in front of the keyboard toward the user. Essentially, the trackball is an upside-down mouse that rotates in place within a socket. The user rolls the ball to direct the cursor to the desired place on the screen and can click one of two buttons (identical to mouse buttons) near the trackball to select desktopobjects or position the cursor for textentry.