Abstract: An arrangement for reduction of Fibonacci p-codes to minimal form, which performs, in succession, all convolutions and all devolutions of bits of the original Fibonacci p-code of a number, whereto the original combination of binary signals corresponds. The original combination of binary signals is handled during the convolution operation so that a binary signal corresponding to a 0 value of the lth digit of the original Fibonacci p-code of the number, as well as binary signals corresponding to l values of the (l - i)th and the (l - p- 1)th digit of the original Fibonacci p-code of the number, are substituted by their inverse signals.