| 摘要 |
PROBLEM TO BE SOLVED: To prevent random numbers from being equal at all the time by starting operation of a random number generating circuit without applying an initial value after a power source is turned on wherein the number of clocks to be inputted for a fixed time from the start of operation is not determined. SOLUTION: After power source is turned on and an oscillation circuit 1 is stabilized, resetting of an entire system is released, and after the lapse of a prescribed time, random numbers are read out. Thus, after resetting of the entire system is released, random numbers are always read out at the same timing. But, a random number generating circuit 4 is not initialized after the power source is turned on and further, the oscillation circuit 1 is started while its oscillation waves are unstable, so the operation is started without an initial value, and the number of clocks inputted for the lapse of a fixed time from the start of operation is not determined and random numbers are different at all the time. |
