A drone data link system allows communication and enables the transfer of data between a drone and the ground station. The complexity of the technology used is dependent on the type of drone in operation and its mission characteristics.

Drones are pilotless aircraft or flying robots, which are also referred to as UAVs. Drones fly autonomously or are controlled by an onboard computer. They can also be operated using a remote control from the ground. Commercial drones are drones that are used in commercial sectors such as industrial, terrestrial imagery and mapping precision agriculture, inspection and monitoring, and others.

A dropper is a device that is used to dispense small quantities of liquids in the form of drops. A standard dropper includes a pipette, a cap, and a bulb.

An e-bike, also known as a booster bicycle, consists of an integrated electric motor for propulsion. Based on the power that the electric motor can deliver and control the system, e-bikes can be classified as e-bikes with pedal assist only, those with power-on-demand and pedal assist, and those with power-on-demand only. An e￾bike battery is used to power e-bikes and is basically a rechargeable battery, which can be recharged at any charging station or at home.

E-cigarettes and vapes are electronic devices that heat a liquid, often containing nicotine, flavorings, and other chemicals, to create an inhalable aerosol or vapor. Unlike traditional cigarettes, they do not burn tobacco. E￾cigarettes are typically cigarette-shaped, while vapes come in various forms, including pens and box mods, offering customizable experiences with varying nicotine levels and flavors.

Edge computing is the practice of processing data near the logical extremes (edge) of the network (i.e., near the source where data is generated). It depends on distributed computing device nodes for data processing and analysis instead of a centralized data-processing warehouse in a cloud computing environment.

Edtech or educational technology comprises the use of elements like hardware, software, and services, such as online educational services, to facilitate and enhance learning. Major end-users that use these technologies for teaching and training purposes include businesses and academic organizations. The global Edtech market is growing as a result of the expansion of these end-user facilities along with the rising adoption of cutting-edge educational technologies.

Elderberry is the edible black or red berry-like drupe of any of a genus Sambucus of shrubs or trees of the honeysuckle family bearing flat clusters of small white or pink flowers. This berry is a key component of various products, including jams, wines, and medicines. Elderberries are often used in traditional healing practices and are known for their antioxidant and anti-inflammatory properties.

Electric motorcycles are plug-in electric vehicles with one motor. Electric motorcycles are distinguished from electric scooters. Electric motorcycles have higher torque and offer higher range when compared to electric scooters.

An electric satellite propulsion system employs electrical energy to change the velocity of a spacecraft. Most all-electric propulsion satellites function by electrically ejecting propellant at high speed. Hybrid propulsion satellites involve both electrical and chemical propulsion technologies. Unlike conventional chemical propulsion satellite, electric propulsion satellite employs electrical energy streams to change the velocity of a spacecraft.