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what does USB stand for
universal serial bus
how many bits are transferred at a time when connecting a device using USB
1 bit is transferred at a time
In a USB, is data transmitted at a steady rate where transmission is synchronised between the computer and the device or is there communication based on what is happening in the device or the computer?
Data transmission can be synchronous or asynchronous
Is USB transmission two-way or one-way communication?
USB-3 transmission is full duplex, earlier USB versions are half-duplex
What is an advantage of USB-enabled devices?
They are automatically recognised by computers, which loads the corresponding device driver
What does HDMI stand for?
high-definition multimedia interface
What is the function of HDMI?
It allows audio and video output from a computer to a display device
What does HDMI transmit?
HDMI transmits digital, high-definition signal
What is HDMI a replacement for?
it is the digital replacement for analogue VGA
What does VGA stand for?
video graphics array
What is VGA?
An analogue method for connecting computers to displays
What are the disadvantages of VGA compared to HDMI?
It has a lower refresh rate (the image on the screen is changed less frequently), it has a fewer number of pixels (worse definition of images), it has a fewer number of colours
Note 
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