How are RAM memory cells organized into words and addresses?

In computer memory technology, RAM is organized into "words" to facilitate efficient data transfer between the central processing unit (CPU) and memory.1

Organization into Words and Addresses

• Words: RAM is commonly structured into words ranging from 8 to 64 bits (1 to 8 bytes). The word size typically corresponds to the number of bits that can be transferred between the main memory and the CPU in a single operation.1
• Addressing: Every word—and often every individual byte—is assigned a unique address. This addressing system allows the CPU to access specific data directly and rapidly, regardless of the sequence in which it was recorded, which is the defining characteristic of "random-access" memory.12
• Decoding Circuitry: To manage this, memory chips incorporate specialized decoding circuits. These circuits select the specific set of storage cells corresponding to a requested address, enabling the system to either store a value at that location or fetch the data currently held there.1

In modern systems, main memory consists of multiple memory chips, and additional addressing circuitry is used to select the appropriate chip for each specific memory address.1