3.2 Input and output devices

Question 1

what is meant by an input device and why it is required?

Answer 1

a device that allows data to be entered into a computer system and it is necessary since it allows for users to interact with computers by entering data and commands, making the system useful and functional.

Question 2

what is meant by an output device and why it is required?

Answer 2

a device that is used to obtain the results of data that has been processed it is essential for presenting processed data from a computer, making it accessible and useful to users in various formats.

Question 3

What is meant by a sensor and the purposes of sensors.

Answer 3

A sensor is a hardware device that detects physical changes in the environment and converts them into digital or electrical signals for a computer to process, helping automate processes, improve safety, and enhance user experiences.

Question 4

Give 3 examples of an Input device.

Answer 4

Keyboard
Barcode scanner
Microphone

Question 5

Give 5 examples of different types of sensors.

Answer 5

acoustic
infra-red
pressure
moisture
temperature

Question 5

Give 3 examples of an Output device.

Answer 5

Speakers
LED Screens
actuator