CD 4001 is a quad, 2 input NOR gate IC made by Fairchild Semiconductors.  It is a monolithic CMOS transistor based IC having efficient source and sink [[wysiwyg_imageupload::]]capabilities. Circuits that use this IC can be easily operated using battery as CD4001 is a low power consumption IC. A 14 pin DIP package, this IC can work at temperatures upto 1250. The circuit in this project is built around a commonly used CD4001 IC and few more discrete components. The circuit described can be used to decorate your Christmas tree with colorful lights. The blinking of LED’s will create a festive appearance which will enhance the Christmas mood.