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An example is the comparator which takes in a continuous range of voltage but only outputs one of two levels as in a digital circuit. Sometimes it may be difficult to differentiate between analog and digital circuits as they have elements of both linear and non-linear operation. Components are often categorized as active (e.g. In digital electronic circuits, electric signals take on discrete values, to represent logical and numeric values. These values represent the information that is being processed. Many countries and regions like United States, Singapore, Canada, Greece, Italy, Denmark, Belgium, the Netherlands, Norway, Ireland, Iceland, Portugal, Israel, Japan, Russia, the United Kingdom, Estonia, Australia, New Zealand, Germany, South Korea, Taiwan, Hong Kong, Finland, Spain, Sweden, Switzerland, and France are generally considered high-tech societies in relation to other countries, since it is common for its citizens having access to technology that is at the cutting edge, in consumer's terms, as can parts of China and India.
Because the high-tech sector of the economy develops or uses the most advanced technology known, it is often seen as having the most potential for future growth. The help desks of a multinational corporation might thus employ, successively, teams in Kenya, Brazil, the Philippines, or India, with the only requirement fluency in the mother tongue, be it Spanish, Portuguese or English. Sometimes it may be difficult to differentiate between analog and digital circuits as they have elements of both linear and non-linear operation. This type of circuit is usually called "mixed signal" rather than analog or digital. Electronics deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive electrical components and interconnection technologies.
(Memory based on flip-flops is known as static random-access memory (SRAM).
Components may be packaged singly, or in more complex groups as integrated circuits.