Many types of communication data are stored or transmitted indigitalform:
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Fibre optics communication data – phone calls, computer data
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Mobile telephone calls
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Sound and picture recordings on magnetic tape, Compact Discs (CD’s) and Digital Versatile Discs (DVD’s)
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Computer data itself – the huge volume of data available on the internet, computerized records kept by businesses, banks, governments, local councils, the police and military and so on.
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Digital TV signals & Digital Audio Broadcasting (DAB) signals - DAB combines two technologies – digital sound recording & data compression.
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Communications satellites utilise very small aperture terminals (VSATs) which relay digital data for a multitude of business services.
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Holographic data - holograms can store large quantities of data by varying the recording angle relative to the photographic plate.
To retrieve the data the hologram must be illuminated with a laser beam at different angles.
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“Smart” weapons – eg tomahawk missiles can be launched over 1000 km from the target and follow precise directional instructions to reach its target.
E-information refers to information that is stored, accessed, and transmitted electronically using digital devices and systems. This can include data, documents, images, videos, and any other form of information that is available in electronic format. E-information is prevalent in today's digital age and is central to activities such as online communication, research, and commerce.
Digital information is stored numerically in
Analog signals, such as sound or light, are converted into digital form through a process called analog-to-digital conversion. This process involves quantizing the continuous analog signal into discrete, digital values represented by binary numbers. Once in digital form, the signal can be processed, stored, and transmitted more efficiently and accurately.
In Information and Communication Technology (ICT), information is characterized by its accuracy, relevance, and timeliness. It should be presented in a clear and understandable format to facilitate effective communication. Additionally, information in ICT is often dynamic, requiring regular updates to maintain its value and usefulness. Furthermore, it can be stored, processed, and transmitted using various digital technologies, enhancing accessibility and collaboration.
Parity checkers are widely used in digital communication and data storage systems to detect errors in transmitted or stored data. They are employed in memory systems, such as RAM, to ensure data integrity by identifying single-bit errors during read and write operations. Additionally, parity checkers are utilized in various network protocols to verify data integrity in packets transmitted over communication channels. Their simplicity and efficiency make them valuable in both hardware and software implementations for error detection.
Sound signals are typically analog signals because they represent continuous waveforms that vary in amplitude and frequency. However, when sound is converted into a digital format through sampling and quantization, it becomes a digital signal. This digital representation can be processed, stored, and transmitted by digital devices. Thus, while sound itself is inherently analog, it can be transformed into a digital signal for various applications.
In ICT (Information and Communication Technology) terms, "text" refers to any written content that is processed, stored, or transmitted electronically. This can include plain text, formatted text, and text embedded in various digital media such as documents, websites, and messaging platforms. Text is fundamental for communication and information exchange in digital environments, serving as a primary medium for conveying ideas, instructions, and data. Additionally, text can be analyzed and manipulated by software applications for various purposes, including data processing and content management.
A device called an analog-to-digital converter (ADC) changes your voice's sound waves into digital signals. When you speak, your voice produces sound waves that are then captured by a microphone. The microphone converts these sound waves into electrical signals, which the ADC processes and transforms into a digital format that can be stored or transmitted by electronic devices.
Digital media refers to any form of media content that is stored and transmitted in digital format. It encompasses a wide range of digital technologies, platforms, and devices used for creating, distributing, and consuming various types of content, including text, images, audio, video, and interactive elements.
Binary.
binary form by SaravanaUltimate
Digital information refers to data that is encoded in a binary format, allowing it to be easily processed, stored, and transmitted by electronic devices. This type of information can include text, images, audio, and video, and is foundational to computing and digital communications. It is typically represented as sequences of 0s and 1s, enabling efficient manipulation and retrieval through various technologies and platforms.