ELI5: Explain Like I'm 5

Address bus

An address bus is like a street address for a computer. It helps the computer know where to look for things. The address bus is a type of cable that connects every part of the computer to the CPU (the main brain of the computer). The address bus helps the CPU talk to all the other parts, such as the memory and the hard drive, so that it can get information from them and put information into them.