Computer Fundamentals

4. The flow of an electrical current that operates in one direction.
5. The flow of electrical current that operates in two directions at any given time.
8. An open-source OS that is completely free for any users who want to install it. This OS is mostly used on servers.
10. An external device that is used to send data and to provide an input/output interface for a computer.
11. An authentication device that can identify a person using their unique facial characteristics, fingerprints, signatures, etc. to identify a physiological behavior or characteristic.
13. Also known as the mainboard, system board, main circuit board, or logic board. The motherboard is a printed circuit board that is designed to communicate with all of the computer’s internal components.
15. The essential foundation of a computer's operating system that provides basic services for all other parts of the OS. The kernel helps with tasks such as process and memory management, file systems, device control and networking.
18. An interface similar to HDMI but offers much higher performance and supports some new features not found on the HDMI interface.
20. The processor is essentially the heart of a computer and is responsible for processing information through input and output functions.
21. The physical components that a computer system requires to function.

1. A display that has built-in touch functionality, allowing the user to interact with the computer through the screen itself.
2. An audio/video interface that is used to transmit high- definition audio and video data from one device to another over a single cable.
3. A base-2 number system composed of both ones and zeros. Each binary digit (1 or 0) is one bit long. An example of a binary number is 1101, which is four bits in length.
5. The specification for a motherboard identifies the board’s dimensions and physical characteristics.
6. Commonly found as a standalone desktop camera and built into most laptops, webcams provide a real-time video feed that is transmitted through the computer to the network.
7. A computer program or device that provides a service to another computer program and its user.
9. A data transfer device that is often used to connect peripherals or transfer data.
12. Software that supports a computer’s basic functions.
14. Programming Interface (API): Allows communication between applications or software by receiving requests and sending responses.
16. The physical connection on a computer that is designed to plug into input/output devices.
17. Acronym for a device that converts electric current and supplies power to an electrical load.
19. A device used to store frequently accessed data and have it readily available to increase the performance of the computer.