Giles Read
Ultrapurple
Mid-1970s 8-digit calculator 7-segment LED display
X-Ray of the display section and part of the keypad of a Rockwell 18R pocket electronic calculator from about 1974.
The digits were on the small squares and formed of a surprisingly complex arrangement of tiny LEDs, all connected to the support circuit board via hair-thin bond wires.
1,590
views
8
faves
1
comment
Uploaded on July 2, 2021
Mid-1970s 8-digit calculator 7-segment LED display
X-Ray of the display section and part of the keypad of a Rockwell 18R pocket electronic calculator from about 1974.
The digits were on the small squares and formed of a surprisingly complex arrangement of tiny LEDs, all connected to the support circuit board via hair-thin bond wires.
1,590
views
8
faves
1
comment
Uploaded on July 2, 2021