lt;p>The “Brain” used red LED displays and a calculator chip from Western Digital. Licensed versions were built in Communist Hungary. Bowmar, perhaps the largest calculator manufacturer in 1973, was bankrupt by 1975.</p>
From Desktops to Handhelds - CHM Revolution
Virtual Museum of Calculators
Products Archive - Coemar
Virtual Museum of Calculators
ALL SUPPLEMENTS – Bowmar Nutrition
National Museum of American History
Bowmar 901B
Bowmar MX55 Personal Calculator (Bowmar Brain)
Calculator Showroom
Human Machine Interface Products - Bowmar
Products – Bowmar Nutrition
Bowmar MX55 Personal Calculator (Bowmar Brain) - CHM Revolution
A Favorite Childhood Memory – the Bowmar Brain – Borden's Blather
ALL SUPPLEMENTS – Bowmar Nutrition
The Consumer Electronics Hall of Fame: Bowmar 901B - IEEE Spectrum