The 4026 is a decade counter integrated circuit (IC) with decoded outputs for driving a common-cathode seven-segment LED display. An advantage of this IC is that it has decade counter functionality together with 7-segment decoder driver. The CD4026BE, manufactured by the Texas Instruments Corporation, is the IC currently used for simple GCSE type project circuits. It comes in a 16-pin plastic dual-in-line package for use with strip boards and breadboards. This IC is based on CMOS technology and will operate from as little as 3 V (minimum), to 18 V maximum, and the absolute maximum rating is 20 V. It can therefore interface with CMOS (3.3 V) and TTL (5 V) systems directly.
