However it is difficult not to find in an entrepreneur of small company some characteristic of an entrepreneur. According to Carland (Caland, 1992) what it varies is the degree of the trend entrepreneur of the individual. According to 3 9241 ISO, usability measure the efficiency, effectiveness and satisfaction with which using they can reach specific objectives in a particular environment. The system must disponibilizar the experienced users the operations of shortcut as: abbreviations, soft keys, double click in mouse, clear language and without codes to inform errors and to help the user to understand the problem. Source: John Paulson. Alterations for a good Usability: To accurately present the information that the necessary user at the moment, nor more nor less;? The terminology of being based on the language of the user and not being guided to the system;? The system must show the dialogue elements and allow that the user makes its choices, without necessity to remember to a command a specific one;? A command or action must always have the same effect;? The same operation must be presented in the same localization;? The system must continuously inform the user on what it is making.
2.1. Heuristical of Jakob Nielsen Considered ‘ ‘ father of usabilidade’ ‘ , Jakob Nielsen divides the usability in five basic criteria: the intuitividade, the efficiency, the memorization, the error and the satisfaction. The Heuristical ones of Nielsen (Jakob Nielsen, scientist of the computation with Ph.D in man-machine interaction) describe properties that must occur in a Web system of high usability. Credit: Source-2011. Visibility of the state of the system? Compatibility of the system with the real world? Control and freedom of the user? Consistency and standards? Prevention of errors? Recognition instead of souvenir? Flexibility and efficiency of use? Aesthetic and design minimalista?