21.
Computers use the _____ number system to store data and perform calculations.

22.
Which of the following is the largest unit of storage?

23.
The _____ key will launch the start buttons.

24.
_______ is the process of finding errors in software code.

25.
To move to the beginning of a line of text, press the _____ key.

26.
When sending an e-mail, the _____ line describes the contents of the message.

27.
The _____ tells the computer how to use its components.

28.
What is backup?

29.
One advantage of dial-up-internet access is ___

30.
What is the term used for unsolicited e-mail?