Abstract: A computer monitoring apparatus for use with a computer system having a plurality of components interconnected by a system bus is provided to display system information related to the components and data information being transferred through the system bus, and comprises a controller for generating an operation inhibiting signal and a plurality of control signals in accordance with a function selection signal of a key input section, a buffer for temporally storing the system and data information, and a display section for displaying the system and data information on a screen thereof.

Abstract: A technique for embodying self-diagnosis in a facsimile machine including a printer with a recording element for receiving or scanning data and a temperature sensor for sensing a surface temperature of the recording element is performed by sensing an input voltage corresponding to the changed surface temperature of the recording element when a preset number of lines of a document are printed, comparing a reference voltage received when the recording element is not driven with the surface temperature sensed in the sensing step, and providing an error message when the sensed voltage is the same as the reference voltage. Thus, the printing or transmitting is performed only when accurate data is received or scanned, while the printing or transmitting by the successive reception or scanning of white data or black data, being error data, is blocked to prevent unnecessary power dissipation and the waste of recording paper.