13 Optimal performance with two or more computer screens

Work Smart - Feel Good

Optimal performance with two or more computer screens Useful tips and a clear overview of the impact on performance and health

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Multiple computer screens: 10% more production, 33% fewer errors

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Using two 20inch monitors resulted in the most production gain.

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Screen Size and Productivity 150% 145% 140%

Productivity Gain

135% 130% 125% 120% 115% 110% 105% Single Monitor

100%

Dual Monitor

95% 90% 17” Std

18” Std

19” Std

20” Std

22” Wide

24” Wide

26” Wide

30” Wide

Screen Size Note: dotted lines indicate estimated productivity gains Figure 2 Relationship between monitor size and setup (single or dual monitor) and production gain for the task to be completed. Source: University of Utah, 2008.

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Selection guide: How and when to use two computer screens :KHQ GRHV LW SD\ WR XVH WZR PRQLWRUV LQVWHDG RI RQH" 5HVHDUFK E\ &ROYLQ HW DO LQGLFDWHV WKDW LI D XVHU VSHQGV PRUH WKDQ RI KLV WLPH RQ WDVNV LQYROYLQJ FRQVROLGDWLQJ LQIRUPDWLRQ IURP PRUH WKDQ RQH VRXUFH WKH LPSURYHG SHUIRUPDQFH GHƬQLWHO\ PDNHV WKH LQYHVWPHQW FRVWV ZRUWKZKLOH &ROYLQ HW DO &RQVLGHULQJ WKH IDFW WKDW PRQLWRUV KDYH EHFRPH PXFK OHVV H[SHQVLYH WKDQ WKH\ ZHUH ZKHQ WKLV UHVHDUFK ZDV FDUULHG RXW WRGD\oV EUHDN HYHQ SRLQW ZRXOG EH HYHQ OHVV WKDQ 6R LI WZR RU PRUH PRQLWRUV DUH UHTXLUHG ZKDW LV WKH RSWLPDO PRQLWRU VHWXS" $QVZHULQJ WKLV TXHVWLRQ LQYROYHV FRQVLGHULQJ WZR LPSRUWDQW IDFWRUV WKH YLHZLQJ GLVWDQFH DQG WKH SRVLWLRQ RI WKH PRQLWRUV IURP HDFK RWKHU DQG WKH XVHU

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Horizontal viewing angle and viewing distance when using two screens

An acceptable horizontal viewing angle lies between 0 and 30º.

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Horizontal viewing angle in degrees. Areas A and B are easily visible but not area C.

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Figure 4 Two 24-inch computer screens positioned at a viewing distance of 80 cm.

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Table 1 Viewing distances when using a dual screen setup of monitors in a range of sizes.

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Monitor setup

2x 17-inch monitors

2x 19-inch monitors

2x 20-inch monitors

2x 22-inch monitors

2x 24-inch monitors

Recommended minimum viewing distance in cm

60

65

70

82

89

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Computer screens side by side 1

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A main screen directly in front of the user and an additional screen to the right or left of it (at an angle of 15°) 1

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Click here for more examples of monitor arm solutions.

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