1. Define what a computer is.
Also called processor an electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations.

2. Define the types, sizes, and functions of computers.
Computers can be generally classified by size and power as follows, though there is considerable overlap:
Personal computer: A small, single-user computer based on a microprocessor.
Workstation: A powerful, single-user computer. A workstation is like a personal computer, but it has a more powerful microprocessor and, in general, a higher-quality monitor.
Minicomputer: A multi-user computer capable of supporting up to hundreds of users simultaneously.
Mainframe: A powerful multi-user computer capable of supporting many hundreds or thousands of users simultaneously.
Supercomputer: An extremely fast computer that can perform hundreds of millions of instructions per second.

3. five components of a computer.
hard drive, motherboard, RAM, CPU and power supply.

4. Explain the difference between system software and application software.
System software is a software that deals directly with the architecture of the computer hardware. Operating system is a system software. Application software is a software that interacts with end users and basically does whatever end user is working on. Application software does NOT deal with the architecture of a computer.

5. Explain how society uses computers in education, finance, government, health care, science, publishing, travel, and manufacturing
Society uses computers for everything, texting, driving, flying planes, getting a snack, going on facebook. There are innumerable uses for computers and absolutely no way to state them all.