Definition of keyboard for English Language Learners. : 1  a row or set of keys that are pushed to play a musical instrument (such as a piano) : 2  a musical instrument that is played by means of a keyboard like that of a piano and that produces sounds electronically. : 3  the set of keys that are used for a computer or typewriter.
Classless Inter-Domain Routing (CIDR, pronunciation: /ËsaÉªdÉr/ or /ËsÉªdÉr/) is a method for allocating IP addresses and IP routing. The Internet Engineering Task Force introduced CIDR in 1993 to replace the previous addressing architecture of classful network design in the Internet.
What Is a Community Improvement District? A Community Improvement District (CID) is a defined area of non-residential properties, whose owners choose to pay an additional tax or fee. The additional revenue is dedicated to services and improvements within the districtâs boundaries. CIDs provide services such as cleaning streets, providing security, making capital improvements, constructing pedestrian and streetscape enhancements, and marketing the area.