Tag: science & technology

IP PBX (Internet Protocol Private Branch Exchange) is the modern system for routing and switching VoIP calls within organizations. Unlike traditional EPABX systems that use analog lines, IP PBX uses digital IP networks for voice communication. It enables features like voicemail, call forwarding, and auto-attendant over internet protocols.

Grace Murray Hopper led the team that created COBOL (Common Business-Oriented Language) in 1959-1960. While often called the 'inventor' of COBOL, she was the primary technical leader of the COBOL committee and had previously developed FLOW-MATIC, which directly influenced COBOL's design. She was a US Navy rear admiral and computer pioneer, not Gates' secretary or the ENIAC designer.

Gene Dolgoff invented the LCD projector in 1984. He developed the technology to create a portable projection system using liquid crystal displays. His invention revolutionized presentation technology by replacing bulky CRT projectors. He was not involved with the human genome project, Dell, or Microsoft's board.

Splog (spam blog) is a fake blog created solely to show ad links, increase search engine rankings, or redirect traffic. The term combines 'spam' and 'blog'. These blogs contain scraped or low-quality content and exist primarily for advertising revenue, not genuine content.

The AZERTY keyboard layout is used primarily in France and French-speaking regions of Belgium. It's named after the first six letters in the top row. Germany uses QWERTZ, Spain uses QWERTY (with special characters), and Russia uses Cyrillic layouts - none of these use AZERTY.

Infrared is the odd one out because it's an optical line-of-sight technology requiring direct visibility between devices. Zigbee, Wibree (later renamed Bluetooth Low Energy), and Bluetooth are all wireless radio frequency protocols operating in the 2.4GHz band that don't require line of sight and can work through obstacles.

Single Vision Lens is not used in cameras - it's a type of corrective eyewear lens with a single optical power throughout. Fish eye, telephoto, and zoom lenses are all specialized camera lenses designed for photographic applications. Single vision lenses are prescription glasses for correcting vision.

BREW (Binary Runtime Environment for Wireless) is Qualcomm's application development platform for mobile phones, originally used in CDMA devices. It provides a runtime environment for mobile applications and was widely used in early smartphones. It's not a coffee brand, Windows version name, or standalone software name.

Mickey is the unit used to measure mouse movement speed and direction. One mickey equals the minimum detectable movement of a mouse, typically around 1/200th of an inch. Mouse sensitivity is often measured in mickeys per second or mickeys per millimeter of physical movement. Joule measures energy, while Gou and Stere are not measurement units.

Refresh rate is the number of times per second a display screen updates its image, measured in Hertz (Hz). A 60Hz monitor refreshes 60 times each second, showing 60 frames per second. Higher refresh rates result in smoother motion and reduced eye fatigue. The 'screen saver' option (A) is unrelated to refresh rate - it's a power-saving feature.