Visual Usability

1. What is the visibility space in the interface?

 Visibility is a user interface is only valued when the user interactions achieve their purpose .Visibility is all about how clearly the user sees state of the interface and all the possible actions.

2. Percentage of the usability interface.

Surveyed had been made and widely distributed. Then, we received 74 responses. The percentage of the usability interface are 48% of the code is devoted to the user interface portion. The average time spent on the user interface portion is 45% during the design phase, 50% during the implementation phase, and 37% during the maintenance phase. 34% of the systems were implemented using a toolkit, 27% used a UIMS, 14% used an interface builder, and 26% used no tools. The projects using only toolkits spent the largest percentage of the time and code on the user interface (around 60%) compared to around 45% for those with no tools. This appears to be because the toolkit systems had more sophisticated user interfaces. The projects using UIMSs or interface builders spent the least percent of time and code on the user interface (around 41%) suggesting that these tools are effective.