Sharp EL-8 - Wikipedia

John Wolff's Web Museum - Sharp EL-8 and EL-8M

Sharp EL-8 - Wikipedia

File:Sharp EL-8 Main PCB Assy solder side.jpg - Wikimedia Commons

Calculator - Wikipedia

Calculator - Wikipedia

Sharp EL-8 & EL-8M

File:Sharp EL-8 Display 8 Digits Green Itron Fluorescent Tubes.jpg - Wikimedia Commons

Sharp EL-8 Electronic Calculator National Museum of American History

National Museum of American History

Sharp QT-8D - Wikipedia

Calculator - Wikipedia

File:Vintage Sharp Model EL-8 Handheld Calculator, 4-Function, Display Is 8 Digits Green Itron Fluorescent Tubes, Made in Japan, Circa 1971 (25997367230).jpg - Wikimedia Commons

Sharp Corporation - Wikipedia

John Wolff's Web Museum - Sharp Calculators

Ken Shirriff's blog: December 2020