According to Hicks (2004), this the top down emphasizes on planning as well as a total understanding of the system and in this case coding does not begin until a sufficient level of detail has been attained. This design was promoted by Harlan Mils who was an IBM researcher and Niklaus Wirth in the 1970s.
Equity first a mortgage brokerage company located in New England has a centralized operations center. This center which is located in Exeter, New Hampshire, is the center of all operations and it, therefore, controls all the operations of the other ten branches in Maine and Massachusetts. It is also the administrative center as it hosts departments such as accounting, human resources, executive management, and support staff. The operations center maintains a central database used to store customer information, such as loan applications, credit check information, and approval status. This fulfills the first requirement that the top-down model needs to have a central office that manages all the operations.
Computer networking using the top-down approach focuses on new short interlude and eventual ‘putting it all together’ that follows the coverage of the network, data link layers, transport awe well as application (Hicks 2004). Each office at Equity first is now self-reliant as they do not rely on the main office to ensure maintenance as well as effective communication. It is also responsible for the decrease in errors when it comes to operations hence no delays or breaks downs in communication takes place because each operation takes place separately. It is also quite easy to maintain because the errors are few and are easy to identify and correct.