Software copyright in the context of Machine-readable medium

A ROM cartridge, usually referred to in context simply as a cartridge, cart, cassette, or card, is a replaceable part designed to be connected to a consumer electronics device such as a home computer, video game console or, to a lesser extent, electronic musical instruments.

ROM cartridges allow users to rapidly load and access programs and data alongside a floppy drive in a home computer; in a video game console, the cartridges are standalone. At the time around their release, ROM cartridges provided security against unauthorised copying of software. However, the manufacturing of ROM cartridges was more expensive than floppy disks, and the storage capacity was smaller. ROM cartridges and slots were also used for various hardware accessories and enhancements.

An end-user license agreement or EULA (/ˈjuːlə/) is a legal contract between a software supplier and a customer or end-user.

The practice of selling licenses to rather than copies of software predates the recognition of software copyright, which has been recognized since the 1970s in the United States. Initially, EULAs were often printed as shrink wrap contracts, where tearing the shrink wrap indicated acceptance. Software distributed via the internet is more commonly licensed via clickwrap (where the user clicks to agree to the license) or browsewrap (continuing to browse the website indicates agreement).

A software license is a legal instrument governing the use or redistribution of software.

Since the 1970s, software copyright has been recognized in the United States. Despite the copyright being recognized, most companies prefer to sell licenses rather than copies of the software because it enables them to enforce stricter terms on redistribution. Very few purchasers read any part of the license, initially shrink-wrap contracts and now most commonly encountered as clickwrap or browsewrap. The enforceability of this kind of license is a matter of controversy and is limited in some jurisdictions. Service-level agreements are another type of software license where the vendor agrees to provide a level of service to the purchaser, often backed by financial penalties.