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Showing posts from December, 2020

8. Why 16GB Pendrive has only 14GB Free Space? (And Same As 32GB,64GB,..)

  Storage manufacturers generally label their drives capacities using the decimal convention, i.e. 1 KB = 1,000 B, 1 MB = 1,000 KB, and so on. This means that every word ending in “byte” is 10^3 times larger than the previous one, and it makes sizes more understandable for humans. However, computers count differently. Because computers use only 0 and 1, they are binary machines, and use powers of 2. They consider 1 KB = 1,024 B, 1 MB = 1,024 KB, and so on, because 1,024 is 2^10. This binary convention makes sizes easier to count for computers. Using the decimal convention, 16 GB is 16,000,000,000 (16 billion) bytes. Storage manufacturers divide this number by 1,000 three times to get 16 GB. When a computer divides this three times, though, it divides by 1,024, and not 1,000, giving a result of about 14.901 gigabytes as the binary capacity. A little bit of space is usually reserved by the file system (usually FAT32, or NTFS), and the size of the disk’s clusters. Every disk is spli

7.2 WWW(WorldWideWeb) [Website,Web server, Browser ,...]

WorldWideWeb(WWW) Website A website is a collection of related web resources including web pages, multimedia content, typically identified with a common domain name, and published on at least one web server. Notable examples are,, and A website may be accessible via a public Internet Protocol (IP) network, such as the Internet, or a private local area network (LAN), by referencing a uniform resource locator (URL) that identifies the site. Websites can have many functions and can be used in various fashions. a website can be a personal website, a corporate website for a company, a government website, an organization website, etc. Websites are typically dedicated to a particular topic or purpose, ranging from entertainment and social networking to providing news and education. All publicly accessible websites collectively constitute the World Wide Web, while private websites, such as a company's website for its employees, are typically a par

7.1 www (WorldWideWeb) [Introduction,History,Function and many more]

  World Wide Web (WWW)                 The World Wide Web (WWW), commonly known as the Web, is an information system where documents and other web resources are identified by Uniform Resource Locators (URLs, such as, which may be interlinked by hypertext, and are accessible over the Internet. The resources of the Web are transferred via the Hypertext Transfer Protocol (HTTP), may be accessed by users by a software application called a web browser, and are published by a software application called a web server. The World Wide Web is not synonymous with the Internet, which pre-existed the Web in some form by over two decades and upon which technologies the Web is built. English scientist Tim Berners-Lee invented the World Wide Web in 1989. He wrote the first web browser in 1990 while employed at CERN near Geneva, Switzerland. The browser was released outside CERN to other research institutions starting in January 1991, and then to the general public in August 1