As an example, consider the diagram above. According to this model, this consumer would be most satisfied with any combination of products along curve U3. The consumer would be indifferent between combination (Qa1, Qb1) and (Qa2, Qb2). A series of indifference curves is sometimes called an indifference curve map.
For other uses, see Firewire (disambiguation). IEEE 1394 is an interface standard for a serial bus for high-speed communications and isochronous real-time data transfer. It was developed in the late 1980s and early 1990s by Apple, which called it FireWire. The 1394 interface is also known by the brand i.LINK (Sony), and Lynx (Texas Instruments).
DEFINITION of 'Message Authentication Code-MAC'. A security code that is typed in by the user of a computer to access accounts or portals. This code is attached to the message or request sent by the user. Message authentication codes (MACs) attached to the message must be recognized by the receiving system in order to grant the user access. MACs are commonly used in electronic funds transfers (EFTs) to maintain information integrity.