Booth encoder based on CTGAL and thermal insulation complement multiplier-accumulator

[0027] Example one: such as Figure 5 As shown, a Booth encoder based on CTGAL includes a selection signal generating circuit 1 and eight CTGAL three-to-one selectors 2 connected in parallel to the selection signal generating circuit 1. One input of the CTGAL three-to-one selector 2 The output terminal of the CTGAL XOR gate is connected to the terminal, and the output terminal of the CTGAL XOR gate of the next stage is simultaneously connected to the other input terminal of the CTGAL three-to-one selector 2 of the previous stage.

[0028] Embodiment 2: CTGAL-based adiabatic complement multiplication and accumulator, mainly composed of multiplication circuit 100 and accumulation circuit 200, multiplication circuit 100 includes partial product generation circuit 101 and partial product summation circuit 102, accumulation circuit 200 with feedback input The partial product generation circuit 101 has the same structure as the CTGAL-based Booth encoder disclosed in the first embodiment. The partial product summation circuit 102 includes a plurality of 4-2 compressors 3, 4-2 connected according to the Wallace tree structure. The compressor 3 includes a three-stage signal processing circuit. The first-stage signal processing circuit 301 consists of two CTGAL OR circuits, two CTGAL AND gate circuits and two CTGAL exclusive OR circuits. The second-stage signal processing circuit 302 consists of one CTGAL AND circuit, a CTGAL OR circuit and a CTGAL exclusive OR circuit, the third-level signal processing circuit 303 is co