| 摘要 |
PURPOSE:To save the trouble of a test by using a maintenance processing unit so as to input a test use simulation input signal and using the simulation input signal so as to conduct the test of an arithmetic processing unit. CONSTITUTION:The operator operates a keyboard device 3 to start a simulation input signal processing of a maintenance tool device TL to input the process signals for required condition sequentially. Thus, a maintenance function processing means 1 of the device TL outputs the entered process signal as the simulating input signal SI and raises the state signal ST to a logic H level. Thus, the process signal is stored in a simulating input signal storage 8 and an H level signal ST is fed to one input terminal of an AND circuit 10. The operator turns on a switch 11 next. Thus, an ON-OFF signal NF rises to a logical H level and the output signal of the circuit 10 rises to an H level an a changeover circuit 14 selects the device 8. Then the signal SI is inputted to an arithmetic means 15 via the circuit 14. |
