What is USB?
Q: What is USB?
A: USB stands for Universal Serial Bus and it is technology that allows a person to connect an electronic device to a computer.
Q: What types of devices can be connected with USB?
A: Most people use USB for computer mice, keyboards, scanners, printers, digital cameras, and USB flash drives. It can also be used on other devices such as smartphones and video game consoles.
Q: What does "hot swapping" mean?
A: Hot swapping means that a device can be plugged into a free socket and simply work without the need to turn off the computer or power down the device when changing it out.
Q: Does USB provide power?
A: Yes, USB can provide a small amount of power to the attached device through the USB cord. Devices that only need a little power can get it from the bus instead of needing a separate electric power plug.
Q: Are older standards like parallel port still in use?
A: Older standards like parallel port, serial port and SCSI are rare nowadays but very few computers in the world still use these old connectors for jobs where USB cannot replace them.
Q: How many devices around the world use USB?
A: There are over six billion USB devices around the world.
