Shift register-adder circuit in 54321 code

摘要

In the shift register-adder circuit according to the subject of the invention, the addition is done in almost the same way as in the shift register-adder circuit according to P 3809632.3. There is a difference, in that the high potentials, or the flipflops which have high potential at their working outputs, do not form a closed column, because either no flipflop or only one flipflop or at most only two flipflops are triggered with high potential. Therefore, in this adder circuit, not all high potentials collect to the right, but the displacement stops even when the high potential of the A summand enters flipflop (21). A flipflop of shift register (2) has a "high potential content" in the case shown if its right-side output has high potential, because the right-side outputs are the working outputs. <IMAGE>