Abstract: Methods of generating a graphical representation of cardiac information on a display screen are provided. The method comprises: electronically creating or acquiring an anatomical model of the heart including multiple cardiac locations; electronically determining a data set of source information corresponding to cardiac activity at the multiple cardiac locations; electronically rendering the data set of source information in relation to the multiple cardiac locations on the display screen. Systems and devices for providing a graphical representation of cardiac information are also provided.

Abstract: A multiplier formed as a single integrated circuit chip generates in consecutive clock cycles the single-precision partial products of multiple-precision operands. Provision of an on-chip temporary register and "wrap-back" path avoids transmitting and externally storing intermediate results so that no clock cycles are used solely for data-transfers or other "overhead". Consecutive double-precision multiplications can be performed concurrently so that complete quadruple-precision products are generated every four cycles.

Abstract: A compact rectangular parallel multiplier array of Booth summation cells includes along a left edge a cell which reduces to two the number of sign-extension bits sufficient to generate subsequent intermediate products. The cell employs optimized logic circuitry which generates a sum, a carry and a guard bit for use during generation of the next most-significant intermediate product.