Answer:the main signal bearing entities are voltage and their current in circuit environments.
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I don't really know but I think it's guest
<span>The answer is letter B. An arrangement of directions and related documentation that instructs a PC or how to play out an undertaking or it can mean all the product on a PC, including the applications and the working framework. I hope the answer helps. </span>
When Jeremy works on the paper, it is being stored in RAM (Random access memory). When he saves it, the data is moved to ROM (Read only memory). Ram can be thought of as a desktop where your data is temporarily stored while you work on it. RAM gets erased when you restart your computer. ROM is where all the permanent data is held and survives reboots.