An ebook is an electronic (or digital) version of a book.
The term is used ambiguously to refer to either an individual work in a digital format, or a hardware device used to read books in digital format. Some users deprecate the second meaning in favour of the more precise “ebook device.” Though e-texts are available as digitally encoded books and the term is often used synonymously with the term ebook. The term e-text is used for the more limited case of data in ASCII text format, while the more general e-book can be in a specialized file format. An exception to this rule is the academic e-text, which commonly includes components such as facsimile images, apparatus criticus, and scholarly commentary on the work from one or more editors specially qualified to edit the author or work in question. An ebook is commonly bundled by a publisher for distribution (as an ebook, an ezine, or a internet newspaper), whereas e-text is distributed in ASCII (or plain text), or in the case of academic works, in the form of discrete media such as compact discs. Metadata relating to the text are sometimes included with etext.Free software downloads. Metadata commonly include details about author, title, publisher, and copyright date; less common are details regarding language, genre, relevant copyright conventions, etc. The ebook community has many options when it comes to choosing a format for production. While the average end user might arguably simply want to read books, every format has its exponents and champions, and debates over “which format is best” can become intense. For the average end user to read a book, every format has its advantages and disadvantages. Formats available include, but are by no means limited to: Ebook advantages OKKKK Text can be searched, except when represented in the form of images. Take up little space. Hundreds (or thousands) may be carried together on one device. Approximately 500 average ebooks can be stored on one CD (equivalent to several shelves’ worth of print books) ebooks may be read in low light or even total darkness, with a back-lit device. Type size and type face may be adjusted. However, enlarging e.g. a PDF document magnifies the text but preserves the original layout and spacing; a practical limit on zooming follows from the requirement to keep a text column within the width of the screen (otherwise horizontal scrolling would be needed during and after reading each line. E-reader too.However, tagged PDFs can be reflowed in Acrobat 6 and 7, eliminating the horizontal-scrolling problem in zoomed PDFs. For more on zooming in, see Electronic maps. Can be used with text-to-speech software. Readily reformatted for independent platforms. Instantly copied When a backup is kept in a remote place, cannot be lost by fire, etc. Once distributed, elimination is hard to impossible. Distributed at low cost. Simultaneously share book (if networked). Errors may be easily corrected with downloadable lists of errata or simply with corrected text. (This can also be an advantage for printed books, in different circumstances.) At the moment, ebooks are commonly published by independent publishing houses, which can mean greater editorial and authorial freedom and more room for experimentation. An inexpensive format for works that require color. An excellent choice of format for works that benefit from search and cross-reference capabilities, such as dictionaries, reference works, certain kinds of textbooks. downloads The terms uploading and downloading are used to describe transferring data electronically, usually between two computers. They often create confusion, as their definitions depend on the context. The person/computer sending the information refers to the transfer as an upload, while the person/computer receiving the information refers to it as a download. These are the definitions used by ISPs. If the customer is sending information, it is an upload; if they are receiving information, it is a download. Most people use the term download when they are receiving a file, and upload when they are sending a file over the Internet. In either case, information is transferred both ways to manage the download. This is often the reason people get confused. The act of transferring a file from one web server to another, while technically a simultaneous download and upload, is often called sideloading. An exception is when talking about data transfers between space vehicles and ground stations; in this case, every transfer from the space vehicle is a free download, while every transfer to it is an upload. As a noun, a download or upload is the information transferred or the act of transferring it. In surfing the World Wide Web the term downloading is not usually used for simply bringing up a web page, but rather for transferring a larger file and/or directly saving it. In a network, the term downloading is not usually used for copying files from one network device to another even if one computer is acting as a host (see copy.) In a more complicated way, “download” means, when you are surfing the web, usually transferring data from the server of the web site you are viewing, to your own. This can either be a program, game, or music, which is saving it permanently to your hard disk, or it could mean transferring images or text from a web page to your computer and downloading them only to a temporary folder. Upload basically means the opposite of download. Upload means transferring a file from your computer to a server on the internet. Let’s take the example of a web site and that you’re using a web host to host your site. When you update your, let’s say, home page and want to publish it, you go to the upload client of your web host. Then, in the upload client, you select “Browse” and look in the folder you saved the home page in, and select it. Then you select the “Upload” button and your computer sends your home page to your web host’s server. free software free software, as defined by the free software Foundation, can be used, copied, studied, modified and redistributed. free software is sometimes referred to by other names such as libre software, FLOSS, or open source software. The opposite of free software is not necessarily commercial, but rather proprietary software. Most free software is distributed gratis online, or offline for marginal cost of distribution, but this is not required, and people are free to sell copies for any price. Richard Stallman, founder of the free software Movement, coined the phrase, “free as in ‘free speech’, not as in ‘free beer’” to help people understand the difference between libre (freedom) software and gratis (zero price) software. More specifically, the term free software emphasises the freedom for computer users to cooperate and to control the software they use. The capitalized term “Open Source” is attached to a definition originally created in 1998 from Debian’s rewrite of the GNU definition of “free software“. As a result, nearly all Open Source programs are free software, but there are some exceptions. Although the license criteria and development practices are nearly identical, according to Stallman, the free software movement considers its philosophical values fundamentally different to those of open source movement. We endorse both “free software” and “open source” without choosing between or dividing the two camps, but he asks people to rather consider supporting the “free software” camp. ( Open source vs. free software). “Freeware” refers to software distributed at no charge. Freeware source code may or may not be published, and permission to distribute modified versions may or may not be granted.