Chickenpox (Chicken Pox) , also known as Varicella, is a very contagious infection caused by the varicella zoster virus. In several parts of the world it is just known as varicella. Patients develop a blister-like rash, which first appears on the face and trunk, and then spreads throughout the body.
Modular arithmetic. Time-keeping on a clock gives an example of modular arithmetic. Modular arithmetic, sometimes also called clock arithmetic, is a way of doing arithmetic with integers. Much like hours on a clock, which repeat every twelve hours, once the numbers reach a certain value, called the modulus, they go back to zero. People talked about modular arithmetic in many ancient cultures.
1 In software design, modularity refers to a logical partitioning of the software design that allows complex software to be manageable for the purpose of implementation and maintenance.2  The logic of partitioning may be based on related functions, implementation considerations, data links, or other criteria. In cognitive science, the idea of modularity of mind holds that the mind is composed of independent, closed, domain-specific processing modules. 2  Specifically, see visual modularity, for an article relating to the various putative visual modules.