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Quizlet is a multi-national American company that provides tools for studying and learning. [1] Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [2] and released to the public in January 2007. [3] Quizlet's primary products include digital flash cards, matching games, practice electronic ...
The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...
Barcode. A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called ...
QR, or "quick response", bar codes were designed to contain the meaningful information directly in the bar code. QR codes can be of two main categories: [49] [ citation needed ] The QR code is presented on the mobile device of the person paying and scanned by a POS or another mobile device of the payee
An example of a physical security measure: a metal lock on the back of a personal computer to prevent hardware tampering. Computer security, cybersecurity, digital security, or information technology security (IT security) is the protection of computer systems and networks from attacks by malicious actors that may result in unauthorized information disclosure, theft of, or damage to hardware ...
Static web pages are often HTML documents, [4] stored as files in the file system and made available by the web server over HTTP (nevertheless URLs ending with ".html" are not always static). However, loose interpretations of the term could include web pages stored in a database, and could even include pages formatted using a template and ...
Information superhighway. The information superhighway (or German: infobahn) [1] [2] is a late-20th-century phrase that aspirationally referred to the increasingly mainstream availability of digital communication systems (and ultimately, the Internet and its World Wide Web ). To some extent, it is associated with United States Senator and later ...
Web navigation. Navigating to using a. Web navigation refers to the process of navigating a network of information resources in the World Wide Web, which is organized as hypertext or hypermedia. [1] The user interface that is used to do so is called a web browser. [2]