Alternating current (AC) is a type of electrical current, in which the direction of the flow of electrons goes and comes at regular intervals or in cycles. The current flowing through the power lines and the electricity normally available in the houses from the wall outlets is alternating current
Direct current (DC) is the electric current that flows steadily in one direction, such as that which flows in a flashlight or in any other device with batteries is direct current.
Input devices
- Mouse:
- The main function of the mouse is to transmit the movements of our hand on a flat surface to the computer.
- Keyboard:
- It is the most common data entry device. It is used to enter commands, texts
- Scanner:
- Following the criteria of the Royal Academy of the Language, famous for the brilliant introduction of the term cederrón to name the CD-ROM, probably nothing; for the rest of common mortals, let’s say it is the word used in computing to designate an image digitizing device
- webcam
- A webcam in simple definition, is a camera that is simply connected to the network or INTERNET. As you can imagine by taking this definition, web cameras can take different forms and uses
alejandro 