For the 8 Bit memory chips (the most common type) the Bits are put together in a Byte (= 8 bits) and stored under an "address". The Bytes can be accessed at this address and then the eight bits of the accessed address are output on its eight data ports. For example, in an 8megabit chip like the 27c801, there are altogether bytes (= bits). Each Byte has its own address ...