Soviet Orzep IV-21 VFD Tube  
Written by AnubisTTP on 2009-08-07  


The Soviet-made IV-21 display is a size-reduced sibling to the IV-18, designed for use in handheld devices. The IV-21 is an eight digit, seven segment display with sign and overflow indicators. At less than half the size of an IV-18 display, this tube was ideal for use in smaller pocket calculators.


Soviet Orzep IV-21

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