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PCB: printed circuit
board
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PU: pickup
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Q: transistor
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R: resistor
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RLA: RY: relay
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SCR: silicon
controlled rectifier
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FET: field effect
transistor
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MOSFET:Metal oxide
semiconductor field effect transistor
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TFT: thin film
transistor(display)
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VLSI: very large
scale integration
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DSP: digital signal
processor
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SW: switch
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T: transformer
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TH: thermistor
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TP: test point
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Tr: transistor
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U:
integrated circuit
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V: valve (tube)
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VC: variable
capacitor
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VFD: vacuum
fluorescent display
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VR: variable
resistor
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X: crystal, ceramic
resonator
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XMER: transformer
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XTAL: crystal
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Z: zener diode
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