927 results about "Daughterboard" patented technology

A daughterboard, daughtercard, mezzanine board or piggyback board is a circuit board meant to be an extension or "daughter" of a motherboard, or occasionally of another card. In particular, daughterboards often have plugs, sockets, pins, connectors, or other attachments for other boards, which is what differentiates them from standard expansion boards such as for PCI or ISA, which are usually called expansion cards. In addition, daughterboards usually have only internal connections within a computer or other electronic devices rather than any external ones, and usually access the motherboard directly rather than through a computer bus. Daughterboards are sometimes used in computers in order to allow for expansion cards to fit on their side, parallel to the motherboard, usually to maintain a small or slim form factor. In this case they can also be called riser cards, or risers. Daughterboards are also sometimes used to expand the basic functionality of an electronic device, such as when a certain model has features added to it and is released as a new or separate model.