Question

What is the purpose of the address bus?

(a) to provide data to and from the chip

(b) to select a specified chip

(c) to select a location within the memory chip

(d) to select a read/write cycle

The question was posed to me in final exam.

This interesting question is from Memory Technology of Embedded Systems in section Memory Systems of Embedded Systems

Answer 1

Right choice is (c) to select a location within the memory chip

For explanation I would say: Address bus is used to choose a particular location in the memory chip. Data bus is used to provide data to and from the chip. Chip select signals are used to select a particular chip within the memory.