G11 CAT System Technologies

• ICT refers to the technology used for communication, information processing, and storage, encompassing computers, networks, and software.
• The information processing cycle is a series of steps (input, processing, output, and storage) that a computer follows to process data and convert it into meaningful information.
• A laptop is a portable computer that integrates all its components into a single compact device, including the keyboard, screen, and built-in battery, allowing users to work or compute on the go.
• A tablet is a portable, touchscreen computing device that is typically larger than a smartphone but more compact than a laptop.
• A hybrid laptop is a device that combines the features of a laptop and a tablet. It typically has a detachable or foldable keyboard that can be used in various configurations.
• A smartphone is a mobile device that combines the functions of a traditional cell phone with advanced computing capabilities, including internet access, app support, and multimedia features.
• A server is a powerful computer or software system that provides services, resources, or data to other computers, known as clients, over a network.
• A client is a computer or device that requests and receives services, resources, or data from a server over a network. They can be desktop computers, laptops, smartphones, or other devices.
• A dedicated device is a hardware device designed for a specific purpose or function, often with limited or specialized functionality, and is not typically used as a general-purpose computer.
• A UPS is a device that provides temporary backup power to connected devices in case of electrical power outages or fluctuations. It ensures that critical equipment, like computers, stays powered and operational during disruptions.
• A phablet is a term used to describe a mobile device that combines features of both a smartphone and a tablet. They typically have larger screens than traditional smartphones but are smaller than tablets.
• Input refers to data or instructions provided to a computer or device for processing. Input can come from various sources, including keyboards, mice, touchscreens, and sensors.
• Image capture is the process of using a device, such as a digital camera or scanner, to capture and convert visual information, such as photographs or documents, into digital format.
• A digital camera is an electronic device that captures and stores still or moving images in digital format, eliminating the need for traditional photographic film.
• A DSLR camera is a type of digital camera that uses a mirror and interchangeable lenses to capture high-quality images, providing greater control over photography settings.
• A point-and-shoot camera is a compact digital camera designed for ease of use, typically with automatic settings for capturing photos and videos without manual adjustments.
• A megapixel is a unit of measurement representing one million pixels. It indicates the resolution or image quality of a digital camera's sensor.
• Optical zoom is a camera feature that allows users to zoom in on subjects by adjusting the camera's lens, resulting in higher image quality without loss of detail.
• Digital zoom is a camera feature that enlarges the image digitally, resulting in a closer view of the subject. However, it may lead to a reduction in image quality as it crops and enlarges the image.
• Resolution refers to the level of detail an image or display can portray, typically measured in pixels (e.g., 1920x1080 for Full HD).
• ISO rating in photography determines the sensitivity of the camera's sensor to light.
• A scanner is a device used to convert physical documents, images, or objects into digital formats, such as images or text, which can be stored or manipulated on a computer.
• Colour depth refers to the number of distinct colors or shades of gray a digital image can represent.
• Biometric input involves using unique physical or behavioral characteristics, such as fingerprints or facial features, for authentication or identification purposes in computer systems.
• A POS system is hardware and software used in retail and hospitality industries to process sales transactions, manage inventory, and perform other business functions.
• RFID is a technology that uses radio waves to identify and track objects or individuals, often used in inventory management, access control, and tracking systems.
• NFC is a short-range wireless communication technology that allows devices, like smartphones, to exchange data when placed close to each other, enabling contactless transactions and data sharing.
• A touch screen is a display screen with touch-sensitive capabilities, enabling users to interact with the computer or device by tapping, swiping, or pinching on the screen.
• A data collection device is a tool or instrument designed to collect specific types of data, such as measurements, readings, or observations, for analysis and recording.
• An accelerometer is a sensor that measures acceleration forces, often used in mobile devices to detect changes in orientation and control features like screen rotation.
• An alternative keyboard is a keyboard that is not physical but is either created virtually on a screen or using LED or laser lights to project the buttons onto a surface.
• Screen size refers to the physical measurement of a display screen, typically measured diagonally from one corner to another, usually in inches or centimeters.
• Contrast ratio measures the difference between the brightest and darkest parts of an image displayed on a screen.
• Aspect ratio is the ratio of the width to the height of a display screen or image. Common options include 16:9 (widescreen) and 4:3 (standard screen).
• Response time, in the context of monitors, is the time it takes for a pixel to change from one color to another. Lower values are preferred for fast-paced activities like gaming to reduce motion blur.
• Lumens measure the brightness of a projector or display device. A higher rating indicates a brighter image, making it suitable for larger rooms or outdoor use.
• DVI is a digital video interface that connects computers to monitors or displays, providing high-quality video signals.
• HDMI is a widely used interface for transmitting high-definition audio and video signals between devices, such as computers, TVs, and gaming consoles, using a single cable.
• An inkjet printer is a type of printer that sprays tiny droplets of ink onto paper to create text and images. It is commonly used for home and office printing tasks.
• A laser printer uses a laser beam to produce high-quality text and images on paper. It is known for its speed and precision and is often used in office environments.