The term current refers to the flow of electrons through a conductor. This flow can be either direct or alternating. Direct current refers to the constant flow of electrons in one direction, while alternating current refers to the periodic reversal of the direction of electron flow. The SI unit for current is the ampere (A), … Read more


An ultracapacitor is a device that can store a large amount of electrical energy in a small amount of space. Ultracapacitors are similar to batteries, but they can charge and discharge much faster than batteries. Ultracapacitors are used in a variety of applications, including power tools, electric vehicles, and renewable energy systems. Is an ultracapacitor … Read more

Light field camera

A light field camera is a digital camera that captures both the intensity and the direction of light rays entering the camera. This allows the light field camera to capture a three-dimensional image of a scene, which can be used to create a three-dimensional model of the scene. How do light field cameras work? A … Read more


An accumulator is a digital electronic device that is used to store data. It is a type of computer memory that is used to store data that has been processed by a computer. Accumulators are used in computers to store data that has been processed by the CPU. Where is accumulator used? The accumulator is … Read more


A voltmeter is an electronic device used for measuring voltage, or the potential difference between two points in an electric circuit. Voltmeters are typically used in electrical engineering and electronics applications to measure the voltage of electric circuits. What is voltmeter in short answer? A voltmeter is a device that measures voltage, or the potential … Read more

Flat-panel TV Glossary

A flat-panel TV is a type of television that uses a flat, thin screen instead of a cathode ray tube (CRT). These TVs are usually lighter and take up less space than CRT TVs. There are two main types of flat-panel TVs: LCD and plasma. LCD TVs use a liquid crystal display to create an … Read more

Parallel ATA (Parallel Advanced Technology Attachment or PATA)

Parallel ATA (Parallel Advanced Technology Attachment or PATA), is an interface standard for the connection of storage devices such as hard drives, solid state drives, and optical drives in computers. PATA is an older standard that has been largely superseded by Serial ATA (SATA). PATA drives are connected to the motherboard via an IDE interface. … Read more

Learning Path: Electronics

A learning path is a sequence of courses or other learning experiences that are designed to help learners achieve their goals. In the context of electronics, a learning path might cover topics such as electronic circuits, digital electronics, and microcontrollers. How long will it take to learn electronics? How long it will take to learn … Read more

Vacuum tube (VT, electron tube or valve)

A vacuum tube is a device that uses an electron beam to control a flow of electrons in a vacuum. The first vacuum tube was invented in 1904 by John Ambrose Fleming. Vacuum tubes are used in a variety of electronic devices, including televisions, radios, and computer monitors. They are also used in some scientific … Read more

Gallium nitride (GaN)

GaN is a compound semiconductor made from gallium and nitrogen. It is used in a variety of electronic devices, including light-emitting diodes (LEDs), lasers, and power amplifiers. GaN has a wide range of applications due to its unique electronic and optical properties. GaN is a direct bandgap semiconductor, meaning it can emit light of a … Read more