What is primary sources of data?

Give examples on how to get primary sources of data.

What do you have to consider when designing a questionnaire?

What are secondary sources of data?

Give examples of secondary data.

What are the pros and cons of using secondary data?

What are input devices?
Give examples

What are the pros and cons of input devices?

What are storage devices? Give examples

What are the pros and cons of storage devices?

What are output devices? give examples.

What are the pros and cons of output devices?