Abstract: An air conditioning and ventilating system including: an air conditioning device including a heat exchanger configured to generate conditioned air by heat exchange with a refrigerant; a ventilation device communicatively connected to the air conditioning device and including a supply air fan and/or an exhaust fan; an airflow volume detection unit configured to detect an airflow volume equivalent value of the ventilation device; and a control unit. On determination that the airflow volume equivalent value acquired from the airflow volume detection unit is equal to or less than a first predetermined value, the control unit sets an operation of the air conditioning device to a stop state.

Abstract: A system for counting a key-in operation has a keyboard, input key judging unit for judging an input key keyed-in by the keyboard to be an effective key, an ineffective key or a command key, input key counting unit for counting the number of inputs of each input key, count result storing unit for storing the number of inputs of each input key, count result detecting unit for detecting the number of inputs of each input key, character display control unit for generating a prescribed character according to a count result of each input key which is employed in displaying the count result, display for displaying the prescribed character generated by character display control unit, and mouse for controlling a movement of a pointer on a screen and for inputting a click signal.

Abstract: A system for counting a key-in operation has a keyboard, input key judging unit for judging an input key keyed-in by the keyboard to be an effective key, an ineffective key or a command key, input key counting unit for counting the number of inputs of each input key, count result storing unit for storing the number of inputs of each input key, count result detecting unit for detecting the number of inputs of each input key, character display control unit for generating a prescribed character according to a count result of each input key which is employed in displaying the count result, display for displaying the prescribed character generated by character display control unit, and mouse for controlling a movement of a pointer on a screen and for inputting a click signal.