The main components of a computer system are hardware and software.

Here are the answers to the questions:

1. The main components of a computer system are hardware and software.

   • C

2. The result of adding together the examination scores of individual students in a class is a source of information for the management.

   • B

3. An example of numeric data is 103.

   • A

4. One primary source of information is an experiment.

   • B

5. The Stepped Reckoner was developed by Gottfried Leibniz.

   • A

6. The Analytical Engine and Differential Engine were invented by Charles Babbage.

   • D