Abstract: A compact lightweight communication device 100 comprising a wireless headset 102 or wireless earset 104 can be provided for wireless communication, to a mobile phone or other wireless electronic communication device 106. The user friendly communication device 100 can have a pivotable boom 146 providing an arm with one and preferably multiple microphones 166 and 168, as well as one or mobile tactile buttons 156. The multifunction communication device can have acoustic audio transducer 134, such as a speaker 136 and/or an earbud 138 or earphone 140. The audio transducer can pivot on a pivot tube 142 comprising a pivotable stem to accommodate the left ear or right ear of the user. The boom and stem can pivot clockwise and/or counterclockwise, manually and independently or can be coupled to automatically pivot together.

Abstract: A compact lightweight communication device 100 comprising a wireless headset 102 or wireless earset 104 can be provided for wireless communication, to a mobile phone or other wireless electronic communication device 106. The user friendly communication device 100 can have a pivotable boom 146 providing an arm with one and preferably multiple microphones 166 and 168, as well as one or mobile tactile buttons 156. The multifunction communication device can have acoustic audio transducer 134, such as a speaker 136 and/or an earbud 138 or earphone 140. The audio transducer can pivot on a pivot tube 142 comprising a pivotable stem to accommodate the left ear or right ear of the user. The boom and stem can pivot clockwise and/or counterclockwise, manually and independently or can be coupled to automatically pivot together.

Abstract: A keypad system operates in a first mode or a second mode. Each key cap is coupled to each group of adjacent two key switches. Each of first symbols is disposed on each of key caps. Two of each second symbols which is rotated 90 degrees to the first symbols are disposed over each key cap, and each of the two symbols is located over each of the key switches. When a key is actuated in the first mode, a first symbol assigned to the key cap is outputted. When a key is actuated in the second mode, a second symbol located over the actuated key switch is outputted. When there is a display operating with the keypad system, the contents of display can be oriented horizontal to the first symbols in the first mode or horizontal to the second symbol in the second mode.

Abstract: The present invention relates to a flowmeter suitable for a micro flow sensor. The flowmeter of the present invention comprises a resistive heater to be inserted into a fluid, AC power with a first frequency supplied to the resistive heater to periodically heat the resistive heater, a signal processing unit for detecting a first signal from the resistive heater in relation to a temperature variation of the resistive heater by the AC power, and obtaining a phase lag of the first signal relative to the heat generation in the resistive heater, and an operation unit for calculating a flow rate based on the obtained phage lag. According to the present invention, the flowmeter of the present invention has a wide measurement range and high measurement accuracy with a simple structure.