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  2. Electrical device - Wikipedia

    en.wikipedia.org/wiki/Electrical_device

    Electrical device. Electric (al) devices are devices that functionally rely on electric energy (AC or DC) to operate their core parts (electric motors, transformers, lighting, rechargeable batteries, control electronics). They can be contrasted with traditional mechanical devices which depend on different power sources like fuels or human ...

  3. Digital electronics - Wikipedia

    en.wikipedia.org/wiki/Digital_electronics

    Digital electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them. This is in contrast to analog electronics which work primarily with analog signals. Despite the name, digital electronics designs includes important analog design considerations.

  4. Electronic circuit - Wikipedia

    en.wikipedia.org/wiki/Electronic_circuit

    An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow. It is a type of electrical circuit. For a circuit to be referred to as electronic, rather than electrical, generally at least ...

  5. Electronics - Wikipedia

    en.wikipedia.org/wiki/Electronics

    Electronics is a scientific and engineering discipline that studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other electrically charged particles. Electronics is a subfield of physics [1][2] and electrical engineering which uses active devices such as transistors, diodes, and ...

  6. Mechanical computer - Wikipedia

    en.wikipedia.org/wiki/Mechanical_computer

    A mechanical computer is a computer built from mechanical components such as levers and gears rather than electronic components. The most common examples are adding machines and mechanical counters, which use the turning of gears to increment output displays. More complex examples could carry out multiplication and division—Friden used a ...

  7. Electronic engineering - Wikipedia

    en.wikipedia.org/wiki/Electronic_engineering

    Electronic engineering. Printed circuit board. Electronic engineering is a sub-discipline of electrical engineering that emerged in the early 20th century and is distinguished by the additional use of active components such as semiconductor devices to amplify and control electric current flow. Previously electrical engineering only used passive ...

  8. Analog computer - Wikipedia

    en.wikipedia.org/wiki/Analog_computer

    TR-10 desktop analog computer of the late 1960s and early 1970s. An analog computer or analogue computer is a type of computation machine (computer) that uses the continuous variation aspect of physical phenomena such as electrical, mechanical, or hydraulic quantities (analog signals) to model the problem being solved.

  9. Computer hardware - Wikipedia

    en.wikipedia.org/wiki/Computer_hardware

    Computer hardware. Computer hardware includes the physical parts of a computer, such as the central processing unit (CPU), random access memory (RAM), motherboard, computer data storage, graphics card, sound card, and computer case. It includes external devices such as a monitor, mouse, keyboard, and speakers. [1][2]