| 摘要 |
PURPOSE:To obtain random numbers with high efficiency from a simple circuit by combining the random number obtained by the depressing time of a special key with the number obtained by the stated recurrence formula in the random number generation system of miniature electronic computor. CONSTITUTION:RAN key 1 which generates random numbers is attached to the input portion, the operation signal corresponding to the depressing time of RAN key is applied to RAN key depressing detection circuit 2a of control part 2 and the output signal of circuit 2a is applied to random number control part 2a which has functions of counting an recurrence formula operation control. An up count command is applied to counting circuit 3 by the output applied from control part 2a and the counting value corresponding to the depressing time can be obtained. When depressing is released, control part 2 generates an instruction by which contents of circuit 3 is transferred to arithmetic circuit 4 and data are stored in registers 4a and 4b in arithmetic circuit 4. Then, operation is done in binary arithmetic circuit 4c and circuit 3 is counted down by 1; the operation is repeated until the contents of circuit 3 becomes O and random numbers are generated according to the operation result. |
