What Is BUS , Explain Types of BUS

BUS :-

When referring to a computer, the bus also known as the address bus, data bus, or local bus is a data connection between two or more devices connected to the computer. For example, a bus enables a computer processor to communicate with the memory or a video cardto communicate with the memory.

1. ADDRESS BUS :-

A collection of wires connecting the CPU with main memory that is used to identify particular locations (addresses) in main memory. The width of the address bus (that is, the number of wires) determines how many uniquememory locations can be addressed. Modern PCs and Macintoshes have as many as 36 address lines, which enables them theoretically to access 64 GB (gigabytes) of main memory. However, the actually amount of memory that can be accessed is usually much less than this theoretical limit due to chipset and motherboard limitations.

2. DATA BUS :-

Databus provides a timeline-consistent stream of change capture events for a database. It enables applications to watch a database, view and process updates in near real-time. Databus provides a complete after-image of every new/changed record as well as deletes, while maintaining timeline consistency and transactional boundaries. The application integration is decoupled from the source database, and each application integration is isolated, which allows for parallel development and rapid innovation.

3. CONTROL BUS :-

The physical connections that carry control information between the CPU and other devices within the computer. Whereas the data bus carries actual data that is being processed, the control bus carries signals that report the status of various devices. For example, one line of the bus is used to indicate whether the CPU is currently reading from or writing to main memory.