A podcast is a series of digital media Digital media usually refers to electronic media that work on digital codes. Today, computing is primarily based on the binary numeral system. In this case digital refers to the discrete states of "0" and "1" for representing arbitrary data. Computers are machines that (usually) interpret binary digital data as information and files A computer file is a block of arbitrary information, or resource for storing information, which is available to a computer program and is usually based on some kind of durable storage. A file is durable in the sense that it remains available for programs to use after the current program has finished. Computer files can be considered as the modern (either audio Digital audio uses digital signals for sound reproduction. This includes analog-to-digital conversion, digital-to-analog conversion, storage, and transmission. In effect, the system commonly referred to as digital is in fact a discrete-time, discrete-level analog of a previous electrical analog. While modern systems can be quite subtle in their or video Digital video is a type of video recording system that works by using a digital rather than an analog video signal. The terms camera, video camera, and camcorder are used interchangeably in this article) that are released episodically and downloaded In networks, uploading and downloading refer to the two canonical directions that information can move, and further defines such data as being copied and compiled (indicated by the term "loading") to create a complete file, after a period of time. Downloading is distinguished from the related concept of streaming, which indicates a through web syndication Web syndication is a form of syndication in which website material is made available to multiple other sites. Most commonly, web syndication refers to making web feeds available from a site in order to provide other people with a summary of the website's recently added content . The term can also be used to describe other kinds of licensing. The mode of delivery is what differentiates podcasts from other ways of accessing media files over the Internet The Internet is a global system of interconnected computer networks that use the standardized Internet Protocol Suite to serve billions of users worldwide. It is a network of networks that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by copper wires, fiber-optic, such as simple download or streamed However, computer networks were still limited, and media was usually delivered over non-streaming channels, such as by downloading a digital file from a remote web server and then saving it to a local drive on the end user's computer or storing it as a digital file and playing it back from CD-ROMs webcasts A webcast is a media file distributed over the Internet using streaming media technology. A webcast may either be distributed live or on demand. Essentially, webcasting is “broadcasting” over the Internet: special client A client is an application or system that accesses a remote service on another computer system, known as a server, by way of a network. The term was first applied to devices that were not capable of running their own stand-alone programs, but could interact with remote computers via a network. These dumb terminals were clients of the time-sharing software Computer software, or just software is a general term used to describe the role that computer programs, procedures and documentation play in a computer system applications known as podcatchers (like iTunes iTunes is a proprietary digital media player application, used for playing and organizing digital music and video files. The program is also an interface to manage the contents on Apple's popular iPod digital media players as well as the iPhone. Additionally, iTunes can connect to the iTunes Store via the Internet to purchase and download music,, Zune Zune is a product line of portable media players manufactured by Microsoft. The line also includes Zune software and the Zune Marketplace services sold by Microsoft, which provide online music, video, and podcast downloads. Zune's primary competitor is the Apple iTunes/iPod product line. Zune players come in two variants, one hard-drive based and, Juice Juice is a cross-platform aggregator application used for downloading podcast media files, such as oggs and mp3s. These media files can be automatically copied to a digital audio player. Juice lets a user schedule downloading of specific podcasts, and will notify the user when a new show is available. It is free software available under the GNU, and Winamp Winamp is a proprietary media player written by Nullsoft, now a subsidiary of AOL. It is skinnable, multi-format freeware/shareware) are used to automatically identify and download new files in the series when they are released by accessing a centrally-maintained web feed A web feed is a data format used for providing users with frequently updated content. Content distributors syndicate a web feed, thereby allowing users to subscribe to it. Making a collection of web feeds accessible in one spot is known as aggregation, which is performed by an Internet aggregator. A web feed is also sometimes referred to as a that lists all files associated with the series. New files can thus be downloaded automatically by the podcatcher and stored locally on the user's computer A computer is a machine that manipulates data according to a set of instructions or other device for offline The terms online and offline have specific meanings with respect to computer technology and telecommunication. In general, "online" indicates a state of connectivity, while "offline" indicates a disconnected state. In common usage, "online" often refers to the Internet or the World Wide Web use, giving simpler access to episodic content.
Most dictionary definitions of a podcast fall into one of two camps as of September 2009. One set focuses on the "on-demand" nature of podcasts. Another set requires the automatic or syndication posting. There are problems with both definitions. The first is too open. Under such a definition, a paid music download could technically be a podcast. Most audiences would disagree. The second is too limiting. It does not allow for manual downloads. Researchers at the Center for Journalism and Mass Communication Research at the University of Texas at Austin are proposing a three-part definition of a podcast: first, that it is episodic; second, that it is downloadable; and third, that it is program-driven, mainly with a host and/or theme.
Like the term broadcast Broadcasting is the distribution of audio and/or video signals which transmit programs to an audience. The audience may be the general public or a relatively large sub-audience, such as children or young adults, podcast can refer either to an ongoing series or episodes of a particular program.[1] A podcaster is the person who creates the content.
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