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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