The method of expressing the state of shift register by Walsh Hadamard Function is used to slove the following two problems: 1) the number of bits of delay with which a delayed m sequence is made of Modulo 2 adders of two or several delayed m sequences; 2) the number of bits of delay with which a delayed m sequence is made of Modulo 2 ad- ders of any number of stages for a generator of delayed m sequence. A general solution of these problems is proposed

and a simplified method is given for the analysis of some delayed m sequences. Delayed m sequences with reciprocal polynomial are also discussed.