| 摘要 |
PROBLEM TO BE SOLVED: To detect abnormal heat generation without adding any special hardware, and reduce the cost and size by performing the operation at every constant interval of time and detecting whether or not an electronic computer is normal or generating abnormal heat according to whether or not the operation result is correct. SOLUTION: This method consists of an input device, a central processing unit(CPU), an output device, and a storage device. For the CPU, an arithmetic logic unit(ALU) 301 which performs given logical operation and a group of general registers 302 which store data, are prepared. For example, operation such as floating-point operation is performed and the actual operation result is compared with a correct operation result calculated at the time of program generation to judge that the computer is normal when they match with each other or that normal calculation can not be done owing to abnormal heat generation when do not. Operation like this is performed at every certain interval of time and if abnormal heat generation is judged, a process for lowering the operating frequency is performed so as to cool the electronic computer. |
