Unified Payments Interface (UPI) Personal Identification Number (PIN) is a critical security feature associated with UPI-based digital transactions in India. UPI is a real-time payment system that enables users to link multiple bank accounts to a single mobile application and conduct various financial transactions. The UPI PIN acts as a secure authentication method, ensuring that …
A PIR sensor, or Passive Infrared sensor, is a type of electronic device that detects infrared (IR) radiation emitted by objects within its field of view. These sensors are commonly used for motion detection and are often found in security systems, lighting controls, and other applications where the detection of human or animal movement is …
A semiconductor device known as an LED, or light-emitting diode, releases light when electricity flows through it. Unlike traditional incandescent bulbs, which produce light by heating a filament, LEDs generate light through a process called electroluminescence. During this process, electrons recombine with electron holes within the device, releasing energy in the form of photons, which …
