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A software-based virtual serial port presents one or more virtual serial port identifiers on a PC which other applications can see and interact with as if they were real hardware ports, but the data sent and received to these virtual devices is handled by software that manipulates the transmitted and received data to grant greater functionality.
There are varieties in how the SGPIO bus is implemented between vendors of HBAs and storage controllers - some vendors will send a continuous stream of data which is advantageous to quickly update the LEDs on a backplane after cables are removed and re-inserted, while others send data only when there is a need to update the LED pattern.
Virtual devices may also operate in a non-virtualized environment. For example, a virtual network adapter is used with a virtual private network, while a virtual disk device is used with iSCSI. A good example for virtual device drivers can be Daemon Tools. There are several variants of virtual device drivers, such as VxDs, VLMs, and VDDs.
Frequent use of a serial port is for a direct computer-to-computer connection. This requires an adapter called a null modem, which isn't actually a modem in the traditional sense, but rather a connector plug that simply crosses the complementary pins on two serial ports so the two sides can communicate. A null modem typically connects the DTR ...
The earliest hard disk drive (HDD) interfaces were bit serial data interfaces that connected an HDD to a controller with two cables, one for control and one for data. [a] An additional cable was used for power, initially frequently AC but later usually connected directly to a DC power supply unit. The controller provided significant functions ...
3. Make Sure You’re Eating Enough at Meals. Why can’t I stop eating between meals? Your body’s going to feel hungry if you’re not getting enough nutrients from food — that’s Biology 101.
At least three members of a family have died, and three others have been hospitalized, after eating a traditional Christmas cake — months after the baker's husband died from food poisoning.
The 5 handbag trends to update your look for 2025. News. News. The Weather Channel. Tornado threat mounts as storms sweep South: Live updates. News. CBS News.