CHM Revolution

Date Introduced

ca. 1963

Photographer

Richards, Mark

Dimensions

3/4 x 6 1/4 x 3/4 in.

Manufacturer

Massachusetts Institute of Technology (MIT) Electronic Systems Laboratory

Copyright Owner

© Mark Richards

Location

United States

Keywords

Pointing; Input

Object ID

X406.84

Early light pens were not accurate enough for graphics. John Ward designed a pen with a focusing lens for the ESL Display Console (“The Kludge”). It was used for some of the earliest computer graphics research.