What connects the CPU to the MCC?

The connection between the CPU (Central Processing Unit) and the MCC (Memory Controller Chip) primarily occurs through the address bus. The address bus is responsible for carrying the addresses of memory locations from the CPU to the memory, allowing the CPU to specify which data it wants to read from or write to a specific location in the memory.

When the CPU executes instructions that require data storage or retrieval, it sends the specific address of the desired memory location via the address bus. This communication is essential because it enables the CPU to access the right data in memory quickly and efficiently. Memory operations are integral to the performance of the CPU, making the function of the address bus critical in the overall architecture of a computer system.

In contrast, the data bus is used to transfer actual data between the CPU and memory, while the control bus carries control signals to manage the data flow. The instruction bus concept refers to the pathway through which the CPU fetches instructions, but it is not the primary connection to the MCC when addressing memory locations. Thus, the address bus is key to connecting the CPU to the MCC, defining how they interact in the memory access process.