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History. In the mid 1960s, Sony introduced the first Dream Machine. The basic idea was to use a radio program to wake up users more pleasantly, as many people found the loud mechanical alarm made by traditional alarm clocks disturbing. The use of direct-read digital display as opposed to a traditional clock dial gave the design a modernistic ...
A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Frequency synthesizers are used in devices such as radio receivers, televisions, mobile telephones, radiotelephones, walkie-talkies, CB radios, cable television converter boxes, satellite receivers, and GPS systems.
The early 1970s saw Heath introduce the AJ-1510, an FM tuner using digital synthesis, the GC-1005 digital clock, and the GR-2000 color television set. In 1974, Heathkit started "Heathkit Educational Systems", which expanded their manuals into general electronics and computer training materials.
A voltage-controlled oscillator ( VCO) is an electronic oscillator whose oscillation frequency is controlled by a voltage input. The applied input voltage determines the instantaneous oscillation frequency. Consequently, a VCO can be used for frequency modulation (FM) or phase modulation (PM) by applying a modulating signal to the control input ...
Intermediate frequency. In communications and electronic engineering, an intermediate frequency ( IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. [ 1] The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning ...
Squelch. Look up squelch in Wiktionary, the free dictionary. In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a strong input signal. [ 1] Essentially, squelch is a specialized type of noise gate designed to suppress weak signals.
Other technological features in the 300ZX included a "Body Sonic" audio system (which utilized a separate amplifier and speakers in the vehicle's front seats that allowed bass from music to be felt by the vehicle's occupants), analog gauges, stereo and climate control, or an optional digital gauge cluster, digital stereo with equalizer and an ...
An electronic tuner is a device which tunes across a part of the radio frequency spectrum by the application of a voltage or appropriate digital code words. This type of tuner supersedes mechanical tuners, which were tuned by manual adjustment of capacitance or inductance in the tuned circuits.
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