Smartek is an electronics company. they have created the headreader, a new computer that can be worn on the forehead. the headreader directly communicates with the human brain and uses the brainwaves as inputs. the company claims the headreader to be a revolutionary device that will turn all smartphones and portable computers obsolete. the headreader can be best described as a

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.