| A | B |
| Artificial Intelligence (AI) | The ability of a machine to simulate or surpass intelligent human behavior. |
| Cache | Special high-speed memory that gives the CPU more rapid access to data. |
| CD-ROM (compact disc read-only memory) | A high-capacity, optical storage medium. |
| CD-ROM drive | A storage device that uses laser technology to read data from a CD-ROM. |
| CD-RW (compact disc-rewritable) | Compact discs on which the user can write data and then change the data using special phase change technology. |
| Command | An instruction that the user inputs into the computer to tell it to carry out a task. |
| Compatible | In computer terminology, able to operate using the same format, commands, or languages. |
| Computer Literacy | The basic understanding of what a computer is, what it does, and why computers are important to your society. |
| Computer Virus | A program designed to attach itself to a file, reproduce, and spread from one file to another, destroying data, displaying an irritating message, or otherwise disrupting computer operations. |
| Copyright | A form of legal protection that grants certain exclusive rights to the author of a program or the owner of the copyright. |