A quartz crystal timepiece incorporating a vibrator unit is disclosed. The vibrator unit is hermetically sealed in a case on which a condenser is fixed and the condenser compensates the oscillating frequency of said vibrator unit to a predetermined center frequency by suitably selecting the capacitance of the condenser after measuring the natural frequency of the vibrator unit. Then there is no need to adjust each vibrator unit to the predetermined center frequency during assembling process.

An electronic clock movement structure in which pressure to the contact plates by attachment of the upper case to the lower case does not electrically connect the contact plates with the circuit base plate but also holdingly attaches the gear train combination to the lower case.

A battery operated quartz crystal controlled alarm clock includes a single printed circuit board having a quartz crystal controlled oscillator and an oscillator controlled drive circuit mounted directly on the single printed circuit board. Additional components as for example a time display unit, an alarm signal source, a disconnect switch for the alarm signal source and one or more batteries are all arranged directly on the same circuit board with direct electrical contact being established between the components and the conductive areas plated on the circuit board. The release spring of an electro-mechanical movement is mounted on the conductor side of the circuit board and serves to establish electrical contact between two conductive areas of the circuit board to complete an electrical circuit for energizing the alarm signal source. The movement is mounted on the opposite side of the printed circuit board and communicates with the release spring through an aperture formed in the printed circuit board. All of the electrical connections are designed to substantially reduce the number of connecting members and the number of soldering operations required to produce the clock.

An ergonomic and weatherproof hand-held electronic device 10. The device 10 includes a housing 12 which surrounds internal electronics. An input 28 and a display screen 32 are mounted on the housing 12. The housing 12 is has a narrow width such that, when held in a hand, the thumb of that same hand may extend fully across the input 28 for full access. The display screen 32 is mounted vertically below the input 28 such that the device may be more stable and more easily grasped. The device includes two cylindrical cavities 48 to receive batteries 42. The cavities 48 are located at the rear vertical edges of the housing such that the rear of the housing 12 is relatively rounded and thus easier to grasp. The battery cavities open to the exterior of the housing. A battery cover 54 is mounted to the housing and seals the cavities 48. A contact for each cavity 48 is located on the cover, and a bus bar extends between the contacts to complete the circuit between the batteries 42.

An ergonomic and weatherproof hand-held electronic device 10. The device 10 includes a housing 12 which surrounds internal electronics. An input 28 and a display screen 32 are mounted on the housing 12. The housing 12 is has a narrow width such that, when held in a hand, the thumb of that same hand may extend fully across the input 28 for full access. The display screen 32 is mounted vertically below the input 28 such that the device may be more stable and more easily grasped. The device includes two cylindrical cavities 48 to receive batteries 42. The cavities 48 are located at the rear vertical edges of the housing such that the rear of the housing 12 is relatively rounded and thus easier to grasp. The battery cavities open to the exterior of the housing. A battery cover 54 is mounted to the housing and seals the cavities 48. A contact for each cavity 48 is located on the cover, and a bus bar extends between the contacts to complete the circuit between the batteries 42.