Labels:text | screenshot | colorfulness | line | parallel OCR: NETWORK OPERATING SYSTEMS 3.1 3.4 Apple 2.9 2.9 IBM 3.3 3.0 Microsoft 2.9 3.1 2.7 Novell 2.6 2.8| 2.6 0.0. 0.5 1.5 2.0 2.5 3.0 3.5 4.0 id Grade weighted by number of users @ Effectiveness Grade weighted by number of incidents S Availability Overall rating Figure 1. The ratings for the four NOSs rated by our survey respondents were grouped together tightly. Software generally received lower tech support grades than hardware,
