Projects

Electronic Token number display with music

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Project Owner : KMDEEPA
Created Date : Mon, 02/05/2011 - 23:18
Project Description :

The Electronic token number display systems are quite popular in banks and financial institutions now-a-days. These can also be used by general practitioners in their clinics to summon patients one-by-one and also by interview committees to call candidates. In most applications there are two sets of displays: a small display is kept inside the cabin of the person who is operating it, and a large one kept outside for visitors. To increase the effectiveness of the token number display system we use Microprocessor to control over all the system. The hardware’s are connected through the ports of Programmable Peripheral Interface ( PPI ) IC8255. The seven segment we use in our project to display the numbers are common anode display and the display’s are connected to a BCD to seven segment decoder IC 74LS47. It can drive the seven segments of the Common Anode Display (CAD). Music is heard through an music buzzer when an two digit was entered through the Keypad of the Microprocessor Kit.

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