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Hardware design On-screen design Next Bibliography Index Guideline 22 Guideline 21 Guideline 20 Guideline 19 Guideline 18 Guideline 17 Guideline 16 Guideline 15 Guideline 14 Guideline 13 Guideline 12 Guideline 11 Guideline 10 Guideline 9 Guideline 8 Guideline 7 Guideline 6 Guideline 5 Guideline 4 Guideline 3 Guideline 2 Guideline 1 Introduction Table of contents Previous

"Lookng at a screen for a long period is sore on the eyes"

Participant in EBONI psychology evaluation

Display technology should be high resolution, with high contrast and minimal glare; lower resolution monitors can cause eye-strain with prolonged use. Backlighting can increase portability, in that it enables text to be read in poor lighting conditions. In EBONI's hardware evaluations, users preferred the device with a colour screen and expressed desire for a colour screen where this was not available.


18.1 Display technology should be high resolution
18.2 Display technology should be high contrast
18.3 Backlighting should be provided
18.4 Colour displays should be used

On-screen design Hardware design Next page Bibliography Index Guideline 20 Guideline 19 Guideline 18 Guideline 17 Guideline 16 Guideline 15 Guideline 14 Guideline 13 Guideline 12 Guideline 11 Guideline 10 Guideline 9 Guideline 8 Guideline 7 Guideline 6 Guideline 5 Guideline 4 Guideline 3 Guideline 2 Guideline 1 Introduction Table of contents Previous page

Figure 16

Figure 18. High quality display technology: Hewlett-Packard Jornada 548

The Hewlett-Packard Jornada 548 has a 2.9 x 2.1 inch high resolution backlit colour screen and runs Microsoft Reader. This attempts to recreate the look and feel of ink on paper through ClearType technology, which triples the resolution of text by smoothing the tiny spaces between the pixels on a computer screen.

Click to enlarge

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image used with permission from Hewlett-Packard