SHIFT ARITHMETIC OPERATOR WITHOUT CLOCK

摘要

PURPOSE: A shift operating unit operated without a clock is provided to perform a shift operation at high speed by processing whole operation course as a simple logic without a special clock for operation. CONSTITUTION: A control unit(100) generates a buffer select signal from past values and present values of a direction input, an edge select input, and a shift pulse input. A present value providing unit(200) provides a shift present value. A right shift value providing unit(300) provides a value shifted to the right as much as one unit on the basis of the present value. A left shift value providing unit(400) provides a value shifted to the left as much as one unit on the basis of the present value.