My understanding of a modern computer is as follows; 'information' is sent from a keyboard as current (I), this signal is sent to the CPU via the appropriate buses (in this instance, USB -> North Bridge -> main bus/cpu bus -> CPU), which is then recognized by a CPU via integrated circuit, and each transistor recognizes this current as "on or "off" (0 or 1). My question: ...what is the current I that the computer sends? Is it classified as data, is it 01000010, or is it just a specific voltage? It seems to me that it would be charged electrons, not "data" Data only exists after the CPU deciphers the minute voltage differences that the keyboard sends to it, correct..? = x Then, assuming this is all right, what happens to the binary information from here? CPU firmware takes over and does what it does? This is for an independent research term paper (due next month), but i want an idea as to how my research is going so far. Thank you for reading edit: basic conceptual question; does data exist only in a CPU or hard drive? "Data" is only electricity unless otherwise decoded?