Essential Introduction to Computers 1. Define the term computer and discuss the four basic computer operations: input, processing, output, and storage 2. Define data and information 3. Explain the principle components of the computer and their use 4. Describe the use and handling of floppy disks and hard disks 5. Discuss computer software and explain the difference between system software and application software 6. Identify several types of personal computer application software 7. Discuss computer communications channels and equipment and the Internet and World Wide Web 8. Explain how to purchase, install, and maintain a personal computer, a notebook computer, and a handheld computer 9. Define e-commerce
1. Computer: Input, Processing, Output, and Storage
In today's world, computers are used for almost every task imaginable. Routine activities such as paying bills, buying groceries, or communicating with a friend can be done with a computer. That is why it is important not only to know how to use a computer, but also to understand the components of a computer and what they do.
Recent studies report that almost 40% of homes surveyed have personal computers, and this number is growing. Given the widespread use of computers, computer literacy - a knowledge and understanding of computers and computer uses - has become an essential ingredient in the recipe for success in today's world. Florida was the first state to demand computer literacy of all students by grade 12.
Collectively, the electric, electronic, and mechanical equipment that makes up a personal computer is called hardware. Devices that surround the system unit (i.e., the keyboard, mouse, speakers, monitor, and so on) sometimes are known as peripheral devices.
Computers manipulate (process) data (input) to produce information (output) and hold (store) that