Data is information or statistics, numbers or records that are important and are worth being preserved for future use. Data can be stored in various forms and in different sources depending on the type of data, its importance and volume.

Hardware for computers includes the computer itself, the monitor, keyboard, printer, mouse and speakers. There is also hardware inside the computer including the motherboard that holds the main processing chips that make up the central processing unit (CPU). The hardware processes the commands it receives from the software, and performs tasks or calculations.

Electronic data interchange (EDI), as the name implies, is a method of electronic information exchange between two business entities. It involves the usage of computer networks and related software to transmit information related to businesses. EDI is an efficient method of decreasing costs, overheads and errors that commonly occur during business transactions. Additionally, business information between partners can easily be interchanged. Apart from information exchange, EDI helps in coordinating business transactions by performing tasks such as invoice generation and initiating delivery orders.

Digital video recorders (DVR) are recording equipment that can record and store digital video on a computer. These can record audio as well as video data from multiple sources.

Television that comes through communication satellites is referred to as satellite television. Digital signals are beamed from satellites to users and these are of three primary types: signals received directly by the viewer, that received by local television affiliates for distribution, or reception by headends for distribution through cables.