Abstract: A wearable device can include a first sensor configured to sense first data, a second sensor configured to sense second data, an energy utilization of the first sensor being less than an energy utilization of the second sensor, and a processor configured to perform a comparison between the first data and a threshold value, if the comparison passes the threshold value, cause the second sensor to sense the second data and process the second data, and if the comparison fails the threshold value, cause the second sensor not to sense the second data.

Abstract: A computer housing assembly includes a computer housing, a cooling device, and a temperature control device. The cooling device is mounted on the computer housing, and includes a thermoelectric chip, a cooling fan, and a cover. The thermoelectric chip has a cold side disposed in the computer housing and provided with a finned structure. The cover is formed with outlet and inlet openings, and encases the thermoelectric chip, the finned structure, and the cooling fan. The cooling fan draws air from the computer housing through the inlet opening, and expels the air through the outlet opening back to the computer housing. The temperature control device controls operation of the thermoelectric chip to maintain temperature of the air in the computer housing above the dew point temperature.

Abstract: A desktop computer includes a main computer module, a power supply module and a connecting unit. The main computer module includes a housing and a plurality of electronic devices mounted in the housing. Each of the electronic devices has a power supply input. The housing is formed with a cable opening. The power supply module is disposed outside the housing of the main computer module, and has a plurality of power supplying outputs. The power supply module is operable so as to provide a plurality of dc operating voltages at the power supply outputs. The connecting unit includes a first cable portion, a second cable portion and a male-and-female electrical connector set. The first cable portion is disposed in the housing, and has a plurality of wires connected respectively to the power supply inputs of the electronic devices. The first cable portion extends outside the housing via the cable opening.