| A pharmaceutical company wants to install a security panel outside its laboratory facility. Only authorized personnel may enter the lab, using their security codes. The following are the valid security codes (also called access codes) and the groups of employees they represent: Values Groups 1645 Technicians 8345 Custodians 9998, 1006–1008 Scientists When a security code is entered, it should not be visible to anyone standing near the security panel. For each security code, access is either granted or denied. All access attempts are displayed in a screen below the keypad. If access is granted, the date, time and group (scientists, custodians, etc.) are displayed on the screen. If access is denied, the date, the time and a message, “Access Denied,” are displayed on the screen. Furthermore, an employee can enter the access code 7, 8 or 9 to summon a security guard for assistance. The date, the time and a message, “Restricted Access,” are then displayed on the screen to indicate that the request has been received. |
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