High Precision and High Speed Handheld Scientific Calculator Design Using Hardware based CORDIC Algorithm

This paper propose the high precision and hardware efficient CORDIC structure for handheld scientific calculator. This structure will compute the standard transcendental functions. CORDIC structure does not use any calculus method such as rational or polynomial functions. The complete structure realization in hardware can be done based on shift and add operation. This paper propose the detailed analysis about number of CORDIC stages versus angle convergence. A novel technique to reduce the ROM based look up table(LUT) size by using fine and coarse grain methods are proposed. Proposed architecture will compute all basic elementary function like logarithmic, trigonometric and exponential functions.