Virtual Keypad

As technology is advancing, people are looking for easier and faster ways of interaction between themselves, the technology, tools and machinery. In order to overcome the difficulty of large machinery and technology this project aims to design a keyboard which discards the need of a traditional physical button. This project is called a virtual keyboard; one of the many types of Virtual keyboards that allow the users to interact with PDA’s, mobile devices and lots more, with the ability of having full physical keyboard capabilities. In this project we are used a 8 ir transmitter and 8 ldr which is receive the signal from the ir transmitter. The output voltage of ldr is given to the lm324 which is compare this signal with the reference one and gives output to the microcontroller. When a user's fingers are placed on the projected keys; the device translates them into keystrokes. From this we display the respected key on lcd using microcontroller. The virtual keyboard helps a user to type in some words, letters just like a true keyboard. This project also we used in security purpose. CONTACT ON : 9503784350 , 02065001020.