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Paper data storage refers to the use of paper as a data storage device. This includes writing, illustrating, and the use of data that can be interpreted by a machine or is the result of the functioning of a machine. A defining feature of paper data storage is the ability of humans to produce it with only simple tools and interpret it visually.
A Y-shaped twig or rod, or two L-shaped ones, called dowsing rods or divining rods are normally used, and the motion of these are said to reveal the location of the target material. The motion of such dowsing devices is generally attributed to random movement, or to the ideomotor phenomenon , [ 7 ] [ 8 ] [ 9 ] a psychological response where a ...
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A notched card showing two levels of notching. Edge-notched cards or edge-punched cards are a system used to store a small amount of binary or logical data on paper index cards, encoded via the presence or absence of notches in the edges of the cards. [1]
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Kardex has been a significant name in business data storage since 1898, tracing back to the Rand Ledger Company. The brand became closely linked to the widespread adoption of the index card as a standard tool for business data management, reflecting its role in the evolution of information organization and retrieval systems throughout the 20th century.
Jack Scantlin of Scantlin Electronics, Inc. (SEI) developed the Quotron I system, consisting of a magnetic tape storage unit that could be sited at a brokerage and Desk Units with a keyboard and printer. The storage unit recorded the data from the ticker line. Brokers could enter the stock symbol on a desk unit. This triggered a backward search ...
Communications on electronic trading platforms are based on a list of well-defined protocols. Although FIX protocol has grown significant market share, the exchange specific protocols (also called "Native" interfaces) have found a strong backing with people using low latency trading.