A byte

​A byte is the smallest unit of data. A byte consists of 8 bits. A bit is represented by 0 or 1. 0 represents off state or no signal, 1 represents on state or a presence of a signal. To operate efficiently a chunks of several bits is used at a time. There could be 8, 16, 32 or even 64 collections of bits that are processed by a processor at one time. 8 an 16 bit processor are legacy now days, because the architecture with that number of bits has limitation of how much RAM (or Random Access Memory) can be used.

Storage in a personal computer can be counted in Kilobytes, Megabytes, Gigabytes, Terabytes. One Kilobytes is 1024 bytes. 1024 number comes as number 2 to 10th power. Each following description of storage is a multiplied by 1024. For simplicity sake 1000 is used.