2. List of components used


· A 2X16 double line LCD, with backlight option and 16 pin package. It supports HD44780 standard.

· A 4X3 telephone keypad. Having 4 rows and 3 columns.

· A crystal oscillator of 12MHz frequency.

· Two 33pF Tantalum bead Capacitors.

· One 10uF capacitor and one 8.2K ohm 0.25 w resistor for reset.

· A 500 ohm resistor for adjusting the contrast.

· A regulated 5V power supply with LM7805 regulator for providing a constant voltage output.
· Assembled on bread-board.