Virtual reality system
Head up display
Visual display unit
A phosphors glow for a period of time sufficient to maintain the image between refreshes.
The liquid crystals remain in alignment between screen refreshes.
A filter ensure the image remains stable whilst the screen is refreshed
Each pixel has its own capacitor that holds the electrical current between screen refreshes
Small LCD screens
Miniature tilting mirrors
Tiny reflective ribbons
Transmissive CRT technology
Digital signal to analog sound wave
Analog signal to digital sound wave
Analog signal to analog sound wave
Digital signal to digital sound wave
Data located further from the centre of Th. Disk is read more rapidly.
Data is read at a constant rate regardless of its location on the disk
More data can be stored on the disk with the same size and density
The spindle motor must alter its speed depending on the current position of the read head.
To correct read errors efficiently as the data is being read
So that transition between pits and lands can be used to represent binary digits
To avoid long pits and lands which are difficult to read reliably
To convert each byte of data into fourteen bits.