| 摘要 |
The tetrad adder according to the subject of the invention differs from the tetrad adder according to P 3606884.5 in that in the type A of the latter, in the input circuit 2 of the main circuit 1, four individual adder circuits (5a to 5d) are arranged, and in the type B of the latter, in the input circuit 2b of the main circuit 1, only one individual adder circuit (5a) is arranged. <IMAGE>
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