Experimental evaluation of binary codes for console display.

"Three binary code schemas were evaluated experimentally in terms of operator coding performance. One of the three code schemas was to be selected for use on a data processing system console display. The criterion for the code evaluation was the operator efficiency measured in terms of speed and accuracy of coding console problems. An independent group of subjects was assigned to each of the three code conditions. One of the three code schemas facilitated a significant time saving of 20-25% as compared to the remaining two code schemas. There were no differences in rate of error between the three code conditions." (PsycINFO Database Record (c) 2010 APA, all rights reserved)