power monitors

ACCESS. bus (or A. b) is a peripheral-interconnect computer bus developed by Philips in the early 1990s. It is similar in purpose to USB, in that it allows low-speed devices to be added or removed from a computer on the fly. While it was in use earlier than USB, it never became popular, largely due to considerably less corporate backing in the industry.

A. Listings for Power Monitors,Power Monitor Unit types include monitors for in-spec performance of AC Power, DC Power, Power Frequency, and Power Phase. b is a physical layer definition that describes the physical cabling and connectors used in the network. The higher layers, namely the signaling and protocol issues, are already defined to be the same as Philips' I²C bus.

Compared to I²C, A. b:

The idea was to define a single standard that could be used both inside and outside a computer. A single I²C/A. b controller chip would be used inside the machine, connected on the motherboard to internal devices like the clock and battery power monitor. bizratecom. An A. b connector on the outside would then allow additional devices to be plugged into the bus. This way all of the low- and medium-speed devices on the machine would be driven by a single controller and protocol stack.

A. b also defined a small set of standardized device classes.