Ca chap3.pdf

## Functionality of Computer Hardware ### Keyboard - An input device that is used to input text, characters, and other commands into a computer device. - Instead of physical keyboard, users also can enter data via an on-screen keyboard. ### Mouse - A pointing device that allows users to interac...

## Functionality of Computer Hardware ### Keyboard - An input device that is used to input text, characters, and other commands into a computer device. - Instead of physical keyboard, users also can enter data via an on-screen keyboard. ### Mouse - A pointing device that allows users to interact with a computer's graphical user interface (GUI) by moving a cursor on the screen and selecting objects or performing actions. - The underside of the mouse contains an optical or laser sensor that tracks the movement of the mouse across a flat surface. ### Printer - It takes electronic data from a computer or other digital device and transfers that information onto a physical medium, creating a tangible representation of the digital content. - Printers are commonly used for creating hard copies of documents, photographs, artwork, and other visual materials. - They come in various types, such as inkjet, laser, and dot matrix printers, each using different technologies to transfer ink or toner onto the paper to create the printed output. ### Monitor - An output device that visually presents digital information, graphics, and images generated by a computer or other electronic device. - A softcopy refers to digital information or content that is displayed on a screen or monitor. ### Projector - An output device that projects an image onto a large surface, such as a white wall or projection screen. - It may be used an alternative to a monitor or television when showing video or images to a large group of people. ### Digital Camera - An electronic device that captures and stores photographs or videos as digital files. - Digital cameras use sensors to convert light into electronic signals that can be stored and processed digitally - allows users to view, edit, and share thei photos and videos on various devices, including computers, smartphones, and tablets. ### Scanner - The primary function of a scanner is to input physical content into a digital format - Certain types of scanners can also output physical copies, like printing and copying, making them a versatile device with both input and output capabilities. ### External Hard Disk - An external hard drive is a storage device located outside of a computer that is connected through a USB cable or wireless connection. ### Speaker - An output devices used to produce audio output/sound that can be heard by the listener. - It can be built into the motherboard or can be attached as external units. ### Headphone - Headphones originally consisted of one speaker for each ear, connected by a band over the head ### Headset - A pair of headphones with a microphone attached. - While headphones can only be used as a listening device, a headset can be used as a listening device and a recording device through recording through its microphone. ### Earphone - A device that is worn over or inserted into the ear and is used for listening to something (such as music or a radio). ### Microphone - To input sound that is then stored in a digital form.