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.xlt – Legacy Excel templates; officially designated "Microsoft Excel 97–2003 Template".xlm – Legacy Excel macro; OOXML Office Open XML (OOXML) format was introduced with Microsoft Office 2007 and became the default format of Microsoft Excel ever since. Excel-related file extensions of this format include:.xlsx – Excel workbook
Microsoft Excel is a spreadsheet editor developed by Microsoft for Windows, macOS, Android, iOS and iPadOS.It features calculation or computation capabilities, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications (VBA).
Free flight is a developing air traffic control method that uses no centralized control (e.g. air traffic controllers). Instead, parts of airspace are reserved dynamically and automatically in a distributed way using computer communication to ensure the required separation between aircraft.
Excel's storage of numbers in binary format also affects its accuracy. [3] To illustrate, the lower figure tabulates the simple addition 1 + x − 1 for several values of x. All the values of x begin at the 15 th decimal, so Excel must take them into account. Before calculating the sum 1 + x, Excel first approximates x as a binary number
Air traffic controllers are generally individuals who possess superior situational awareness, spatial awareness, and are well organized.Other skills that are essential include a fast processing of numeric computations and mathematics, assertive and firm decision-making skills, the ability to maintain their composure under pressure, and an excellent short-term memory.
The toolbar, also called a bar or standard toolbar (originally known as ribbon), [1] [2] is a graphical control element on which on-screen icons can be used. A toolbar often allows for quick access to functions that are commonly used in the program. Some examples of functions a toolbar might have are open file, save, and change font.
Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC is to prevent collisions, organize and expedite the flow of traffic in ...
The Air Traffic Control System Command Center serves as the principal element of the Systems Operations Division of the Air Traffic Organization and is responsible for the real-time command, control, and oversight of the National Airspace System (NAS).