Turn a VFD 1970s Calculator Into a Digital Clock : 20 Steps (with Pictures) - Instructables
DATAMATH
Vintage SIGMA TRS 6212 PD Desktop Printing and 50 similar items
Sharp EL-307 | Old calculator, Pocket calculators, Slide rule
My 1971 Burroughs C3155 calculator. It was made before they decided on how digital number displays should look. That zero at the end is not a mistake.. That's actually how it's supposed
CALCULATOR CASIO FX-31 TESTED BLUE VFD DISPLAY SCIENTIFIC W/ ORIGINAL AC ADAPTER | eBay
calculators/Hanimex BCM821 - calculator.org
File:Vintage Unisonic Electronic Pocket Calculator, Model 890C, VFD (Vacuum Fluorescent) Display, Sealed Battery Pack, Made In Japan, Circa 1975 (16390017822).jpg - Wikimedia Commons