The MagicBrain Calculator was manufactured in 1955 by the Chadwick Company, this early calculator was operated using a stylus, and could perform addition, subtraction and multiplication calculation
My personal history with calculators
The Magic Brain Calculator – I Remember JFK: A Baby Boomer's
Powerhouse Collection - Two Magic Brain pocket calculators
Chadwick Magic Brain Calculator, B1633.01
Vintage Chadwick Magic Brain Calculator on A La Modern
Vintage 1960's Magic Brain Pocket Calculator W/Stylus, Made in Hong Kong - Unopened package Includes instructions, Calculator and Stylus are both
Vintage 1960's Magic Brain Pocket Calculator W/Stylus, Made in Hong Kong
That's Logical! Comp IV from Milton Bradley – Global Toy News
Powerhouse Collection - Two Magic Brain pocket calculators
The Magic Brain Calculator – I Remember JFK: A Baby Boomer's
Magic Brain Calculator-original Pocket Math Device-1960s-made in
Magic Brain Calculator, c. 1950-1969 - Machine, Calculating
How to Calculate Email Open Rate + Formulas
How to calculate and monitor your Break-Even Point
Calculator Drawings for Sale - Fine Art America
File:Vintage Magic Brain Mechanical Pocket Calculator, Made in
