Your Electronics Open Source

4.ALPHANUMERIC KEYBOARD

An alphanumeric keyboard with 14 keys (0-9,RD,WR,SEND,UP DOWN) allows both to write and to visualize the received data. The interface with the microcontroller has been realized taking advantage by the method to matrix that allows to diminish the number of I/O necessary to the electric connection and simplifies the realization of the management's firmware driver.