Ключевые слова: abstract, analysis, application, approach, background, business, buy, cellphone, chart, concept, cost, currency, desktop, direction, double, economic, electronic, exchange, exposure, finance, financial, forex, future, global, growth, increase, index, information, innovate, intelligent, invest, market, marketing, multi, network, no people, object, online, personal, phone, plan, quiz, rate, sketch, smart, stock, top, trade, trend, view,