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There is no difference. A LCD Monitor (Liquid Crystal Display) is a type of VDU (Visual Display Unit).
Visual display unit is the British term for visual display. Basically, this refers to the output of an electronic device through a screen or monitor. A TV screen and a monitor of a desktop computer are both visual display units.
VDU is a term used to describe a visual display device for a computer. For example, a flat panel display, monitor, and a projector are all examples of VDUs. VDU is most commonly used to describe a standard CRT monitor.
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VDU stands for Visual Display Unit - The technical term for the computer's monitor.
It's the monitor used with your computer.
a VDU (Visual Display Unit)
One possibility could be Visual Display Device (commonly known as a monitor !)
The function of a monitor is to provide a visual display of the data that is in the computer. The monitor provides a way to select options that are available on the computer.
The missing visual display is either a problem with the phone's monitor or a connection problem. you will need to call the phone company and ask them about repair options for the phone.
Visual display means in simple terms a Monitor where all data can be easily displayed clearly.
One example is the monitor (screen) of a computer that displays text and graphics.