MMX multimedia instruction set

The MMX multimedia instruction set (Multi Media Extension) adds 57 multimedia instructions to the CPU to enhance the processing of multimedia information by the CPU and improve the processing capabilities of the CPU in audio, graphics, video, and communications applications. However, because it only optimizes integer operations, it does not enhance floating point operations. So in 3D graphics, Internet 3D web application is not good.

USB HUB  is a device that expands a single  Universal Serial Bus  (USB) port into several so that there are more ports available to connect devices to a host system, similar to a  power strip .

USB hubs are often built into equipment such as  computers ,  keyboards ,  monitors , or  printers . When such a device has many USB ports, they all usually stem from one or two internal USB hubs rather than each port having independent USB circuitry.

Physically separate USB hubs come in a wide variety of  form factors : from external boxes (looking similar to an  Ethernet or network hub ) connectible with a long cable, to small designs that can be directly plugged into a USB port (see the "compact design" picture). In the middle case, there are "short cable" hubs which typically use an integral 6-inch cable to slightly distance a small hub away from physical port congestion and of course increase the number of available ports.

Laptop  computers may be equipped with many USB ports, but an external Usb Hub can consolidate several everyday devices (like a mouse and a printer) into a single hub to enable one-step attachment and removal of all the devices.

USB HUB

Usb3.0 Hub,Usb2.0 Hub,Usb-C Hub,Usb3.1 Type-C Hub

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