What Is an Address Bus?

The Address Bus (also known as the Address Bus) belongs to a computer bus (a part) and is used by the CPU or DMA-capable units to communicate that these units want to access (read / write) The physical address of a computer memory component / place.

Address bus

The Address Bus (also known as the Address Bus) belongs to a computer bus (a part) and is used by the CPU or DMA-capable units to communicate that these units want to access (read / write) computer

The Address Bus is a computer bus. It is a CPU or a DMA-capable unit. It is used to communicate the physical addresses of the memory components / places that these units want to access (read / write) to the computer. ^[1]

ISA bus

The detailed development history of the address bus includes the early PC bus and ISA bus, PCI / AGP bus, PCI-X bus, and mainstream PCIExpress and HyperTransport high-speed serial buses. From the PC bus to the ISA and PCI buses, and then from PCI to the PCIExpress and HyperTransport systems, the computer has also completed three leap-forward upgrades in these three major twists. Corresponding to this process, the computer's processing speed, implemented functions, and software platform are all undergoing the same evolution. Obviously, without the advancement of bus technology as the basis, the rapid development of computers cannot be discussed. The industry stands at a new starting point: PCIExpress and HyperTransport have created a near-perfect bus architecture. The industry's thirst for high-speed buses is also endless. Both PCI Express 2.0 and HyperTransport 3.0 will be on the agenda, and they will bring efficiency improvements again. In a computer system, each functional component is addressed through an address bus, and the speed of the bus has a great impact on system performance. Because of this, the bus is known as the nerve center of the computer system. But compared to CPU, graphics card, memory, hard disk and other functional components, the improvement of bus technology is much slower. In the 20-year history of the development of the PC, the bus has been updated only three times, but each change has changed the face of the computer. ^[1]