| 摘要 |
An arithmetic and logic unit ("ALU") of a microprocessor is subdivided into two blocks corresponding respectively to bits 0-15 and 16-31, the first block being of the type with simple carry propagation ("manchester carry ripple") and the second being of the type with carry selection ("carry select"), each of the blocks itself being subdivided into sub-blocks each of four bits, sub blocks each equipped with a carry skip device ("carry skip") relating to the sub block. With each four bit sub-block is associated a circuit (LOOBIT, LOOBIS) for carrying out the carry skip and regenerating the levels. <IMAGE>
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