(n) an oscillator that produces electrical oscillations at a frequency determined by the physical characteristics of a piezoelectric quartz crystal, Syn.quartz oscillator
n. 1. One that oscillates; specif.: (Electronics) Any device or circuit for producing electric oscillations, whether of current or voltage; esp., an apparatus for generating electric waves in a system of wireless telegraphy. Oscillators are essential components of radio transmission devices and digital computers, as well as many other types of electronic device. In computers the oscillator provides the voltage impulses which permit information bits to be transferred between parts of the computer in a defined sequence. [ Webster 1913 Suppl. +PJC ]
2. (Mech.) An instrument for measuring rigidity by the torsional oscillations of a weighted wire. [ Webster 1913 Suppl. ]
a. [ Cf. F. oscillatoire. See Oscillate. ] Moving, or characterized by motion, backward and forward like a pendulum; swinging; oscillating; vibratory; as, oscillatory motion. [ 1913 Webster ]
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เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
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