Abstract: A high-reliability computer program, a program executing device, a program creating program for creating a high-reliability computer program, and a state displaying program are provided. The computer program is constituted of a set of capsule programs having the same structure and executed by a computer. Each capsule program allows a computer to function open data area elements where open data acquirable by another capsule program is set, open data acquiring elements for acquiring the open data set in the open data area elements in another capsule program, and main processing elements for executing a predetermined computation of the open data acquired by the open data acquiring elements and setting at least a part of the result of the computation as the open data in the open data area elements.

Abstract: There is provided a high-efficiency DC-DC converter which comprises a voltage resonance circuit to which electric power from a low-voltage direct-current power supply, including a household fuel cell and a solar cell, is input and performs DC-AC conversion by zero-voltage switching, an insulating high-frequency transformer which transmits the converted power, a current resonance circuit which is provided on the secondary side of the transformer and performs zero-current switching, a rectifier circuit which rectifies the output from the current resonance circuit, and a smoothing circuit which rectifies the output from the rectifier circuit.

Abstract: There is provided a high-efficiency DC-DC converter which comprises a voltage resonance circuit to which electric power from a low-voltage direct-current power supply, including a household fuel cell and a solar cell, is input and performs DC-AC conversion by zero-voltage switching, an insulating high-frequency transformer which transmits the converted power, a current resonance circuit which is provided on the secondary side of the transformer and performs zero-current switching, a rectifier circuit which rectifies the output from the current resonance circuit, and a smoothing circuit which rectifies the output from the rectifier circuit.