Microcontroller Based Digital LCD Clock, Size : 10x10Inch, 12x12Inch, 4x4Inch, 6x6Inch

Port 1 of the controller (AT89C4051) is used as the data lines for the LCD (starting from pin 7- pin14 of LCD). Here using a 16 x 2 lines LCD display. In the first line, display "DAY" and "DATE", in the second line, i am displaying "TIME" with am/pm. Port 3 is used for the clock setting and it also provides the necessary control signals for the LCD. As shown in the diagram, switch3 will be used to select the parameter which need to be changed, switch 1 and 2, are used to increase or decrease the selected parameter value. When the power supply is switched on it will give you the default date and time, but later you can change it to the desired value. The source code for the project is written in C-language, and compiled using Keil C compiler. The schematic contains the power supply module also, which is not shown in the figure above. It is Microcontroller based (89C4051) LCD 16x2 display clock with day, date and time. We are into manufacturing and supplying Microcontroller Based Digital LCD Clocks nationwide.