Explanation:
Start-up companies can store, manage, process data and use programs through a web-based interface – something that greatly reduces costs. Data stored in the cloud can be accessed from anywhere through various devices with web connectivity, which is an advantage for small companies that don't have a huge IT budget.
I believe the process is called High Level Format.
With a pull-up resistor, the input pin will read a high state when the button is not pressed. In other words, a small amount of current is flowing between VCC and the input pin (not to ground), thus the input pin reads close to VCC. When the button is pressed, it connects the input pin directly to ground.
They use electrical energy. Majority of devices that people now use are controlled by semi conductor components. Your answer is they are using electrical energy! But sometimes they do use radiation.
