What Does "Plug and Play" Mean?

PNP is short for Plug-and-Play. Its role is to automatically configure the boards and other devices in the (bottom) computer, and then tell the corresponding devices what to do. The task of PnP is to coordinate physical devices with software (device drivers) and operate the devices to establish a communication channel between each device and its driver. In other words, PnP allocates the following resources to devices and hardware: I / O addresses, IRQ, DMA channels, and memory segments.

Plug and play technology

Right!

The plug-and-play function is only available when all four conditions are met: plug-and-play standard BIOS, plug-and-play operating system, plug-and-play equipment, and plug-and-play

Automatically adjust the output brightness of the projection lamp according to the ambient light, automatically monitor the input signal source of the projector, and automatically switch and track settings according to the type of signal source, and even the projector's working contrast and color temperature It is automatic to ensure that the projection user can obtain a satisfactory projection effect without setting any parameters. Of course, as the projection technology continues to mature, the plug-and-play function of the projector continues to expand. For example, many models of projectors can already automatically perform keystone correction according to the method of hanging the projection screen, so The projection screen is always displayed in the center of the screen, so you don't have to worry about the tilt of the projection screen. For example, as long as you plug in and place the EPSON EMP-74 projector, the projector will automatically eliminate the tilt of the projected image without any manual settings.