| 摘要 |
PURPOSE:To extract and display an arithmetic result on the way of arithmetic optionally by starting an arithmetic result displaying program with an interruption based upon an output signal formed on the basis of a display request signal. CONSTITUTION:An interruption controller 6 interrupts a CPU2 in accordance with a display request signal Vd. The CPU2 rewrites the succeeding instruction of an instruction providing a required arithmetic result in a sampling program by an output instruction Od. Since the output instruction Od is supplied to the controller 6, the controller 6 interrupts the CPU2. Consequently, the arithmetic result displaying program is started and the required arithmetic result on the way is stored in a memory 4. The arithmetic result on the way stored in the memory 4 is outputted to a printer or the like. Thus, the arithmetic result on the way of arithmetic can be optionally fetched and displayed. |
