1) " Digital" -- As it applies to Digital Ink A digital system is one that uses discrete values rather than a continuous spectrum of values: compare analog.The word comes from the same source as the word digit : the Latin word for finger (counting on the fingers) as these are usedfor discrete counting. The distinction digital versus analog can refer to data storage and transfer, the internal working of an instrument, and thekind of display. The word "digital" is commonly used in computing. Contents 1 Digital vs analog 1.1 Digital noise 1.2 Analog versus digital display; ease of reading 1.3 Systematic loss of data 2 Historical digital systems 2.1 Non binary, non electronic 2.2 Non binary, possibly electronic 2.3 Binary, audio 2.4 Binary, visual 3 See also Digital vs analog Digital noise When data are transmitted using analog methods, a certain amount of noise enters intothe signal. This can have a myriad of different causes: data transmitted by radio may bereceived badly, suffer interference from other radio sources, or pick upbackground radio noise from the rest of the universe. Electric pulses being sent down wires are attenuated by the resistance ofthe wire, and dispersed by its capacitance, and heat variations can increase or reduce these effects. Whilst digitaltransmissions are also degraded, any slight variations can be safely ignored. Any variance could provide a great amount ofdistortion in an analog signal. In a digital signal, these variances can be overcome, as any signal close to a particular valuewill be interpreted as that value. Analog versus digital display; ease of reading For human readable information, both digital and analog display methods can be useful. Should an instant impression berequired, analog meters often give information quickly. Many people glance quickly at their analog watch and know roughly whatthe time is. When accuracy is requi...
2) " Ink" -- As it applies to Digital Ink An ink is a liquid containing various pigments and/or dyes used for colouring a surface to render an image or text. Common perceptions consider ink for use in drawingor writing with a pen or brush. However, inks areused most extensively in printing. Early varieties of ink include Indian ink, various natural dyes made frommetals, the husk or outer covering of nuts or seeds, and sea creatures like the squid (known as sepia ). India ink is black and originated in Asia. Walnut ink and iron-gall nut ink were made and used by many of the early masters to obtain the golden brown ink used for drawing. Pigmented inks contain other agents to ensure adhesion of the pigment to the surface and prevent its being removed bymechanical abrasion. These materials are typically referred to as resins (in solvent-based inks) or binding agents (inwater-based inks). Pigmented inks have the advantage when printing on paper that the pigment stays on the surface of the paper. This isdesirable, because when more ink stays on the surface of the paper, less ink needs to be used to create the same intensity ofcolour. Dyes, however, are generally much stronger and can produce more colour of a given density per unit of mass. However, becausedyes are dissolved in the liquid phase, they have a tendency to soak into paper, thus making the ink less efficient and alsopotentially allowing for the ink to bleed at the edges, producing unsightly and poor-quality printing. To circumvent this problem, dye-based inks are made with solvents that dry rapidly or are used with quick-drying methods ofprinting, such as blowing hot air on the fresh print. Other methods to resolve this include harder paper sizing and more specialized paper coatings. The latter is particularly suited to inks that are used innon-industrial settings (and thus must conform to tighter toxicity and emission controls), such as ink jet printer inks, include coating the paper with...
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