System Bus

Definitions

1. The primary communication pathway — comprising data, address, and control lines — that connects the CPU, memory, and I/O subsystems on a motherboard, allowing components to transfer data. In software contexts like D-Bus, it refers to an IPC bus for system-level services.

   In plain English: The main highway inside a computer that lets the processor, memory, and other parts send information to each other.

   Example: "The NVMe drive bypasses the old system bus entirely and talks to the CPU directly over PCIe lanes."

Related Terms

• MTTF
• MTBF
• FPGA
• ASIC
• GPIO
• UART
• Multiplexing
• PCIe