This part is a kind of semiconductor called CD4543B.Function of this product has CMOS BCD-TO-SEVEN-SEGMENT LATCH/DECODER/DRIVER. Manufacturers : Texas Instruments Image and pinout : Some of the text within the PDF file : [ ... ] CD4543B PDF Datasheet Download Metablog 2017/10/12 03:16 2017/10/12 03:16