840-AG12D-ES,IC 与器件插座 40P DIP ECON SOCKET 1200
840AM-275LF,IC CLK/FREQ SYNTH 8SOIC
840AM-275LFT,IC CLK/FREQ SYNTH 8SOIC
840C-12-1,XTAL OSC VCTCXO 12.0000MHZ SNWV
【Protek】840F,台式示波器 MODEL 840 W/FLASH MEMORY PORT INSTALL
【Protek】840FC,手持示波器 Handheld DSO/RMS DMM 40MHz DataLogger/USB
【FACOM】840LE,
840N011BGILF,IC CLK
