The SC3423 is a single-chip LSI CMOS calculator with 8-digit four function arithmetic operations, single memory, extraction of square root and percentage calculation functions, leading zero and trailing zero suppression, chain calculations and internal debouncing and encoding of keyboard inputs. It is designed for LCD operation with 3.0V power supply (either from solar cell or battery), auto-power off, low power dissipation and single power supply making the SC3423 ideal for hand held calculators with low system cost.