Windows 8 is part of the Windows NT family of operating systems. Windows NT is a family of operating systems produced by Microsoft, which includes Windows NT 3.1, Windows NT 3.5, Windows NT 4.0, Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, and Windows 10. The Windows NT architecture is known for its stability, security, and advanced features, making it suitable for both personal and enterprise use.

"MUS" is not a recognized operating system abbreviation in common use. Operating systems are software programs that manage computer hardware and provide services for computer programs. Examples of well-known operating systems include Windows, macOS, Linux, and Unix. "MUS" does not correspond to any widely used operating system.

The elements of a chart in MS Excel 2010 include the following:-

1. Title: The title of the chart, which describes the topic or purpose of the chart.

2. Axis: Lines used to measure data on a chart.

3. Data Series: A group of data points on a chart.

4. Chart Area: The outer area of the chart, including the title, axes, and data series.

5. Legend: Labels used to identify data series on a chart.

6. Gridlines: Lines used to measure data on a chart.

7. Data Labels: Labels used to display the values of data points on a chart.

8. Data Table: A table used to display data from data series below the chart.

1. It is an international online software store developed by Google for Android devices.

2. Google Play is an online store where people can find their favorite applications, games, movies, TV shows, books, and more.

3. There are 2 million applications and games available for billions of people in the world.

4. So far, developers have earned more than $120 billion from these.

1. The main page of a website is the home page which acts as a gateway to the rest of the pages of the website. The home page is usually the gateway to the website.

2. A home page is a webpage that serves as the starting point of a website.

3. This is the default webpage that loads when visiting a web address that contains only a domain name.