Magic brain' calculator. C.1955 Science Museum Group Collection

Magic brain calculator in tin and plastic, with stylus and instructions

Magic Brain calculator, 102732461

Unopened package Includes instructions, Calculator and Stylus are both metal

Vintage 1960's Magic Brain Pocket Calculator W/Stylus, Made in Hong Kong

k09-the_magic_numbers_of_dr._matrix_0

National Museum of American History

What is the older history of computers and computation devices pre

Software History Bibliography - Charles Babbage Institute

Magic Brain Calculator Vintage Calculator Plus Minus

Psi in search of consensus, Behavioral and Brain Sciences

Vintage Chadwick Magic Brain Calculator. Made in Japan. Mid century modern. This item is used and has visible scratches and signs of usage. I have

Vintage Chadwick Magic Brain Calculator. Made in Japan Mid century modern.

Mathematical Treasure: Wang Loci-2 Programmable Calculator

Michael Shermer, Arthur Benjamin - Secrets of Mental Math--The Mathemagician's Guide to Lightning Calculation and

Vintage Chadwick Magic Brain Calculator. Made in Japan. Mid century modern. This item is used and has visible scratches and signs of usage. I have

Vintage Chadwick Magic Brain Calculator. Made in Japan Mid century modern.

History of Information

Interfaces Volume 2 (2021), CHARLES BABBAGE INSTITUTE