part of the Whirlwing project at the MIT (Massachusetts Institute of Technology), under the leadership of Jay Forrester.
computers is dated between 1949-1952
laszlo biro invented the ballpoint pen in 1938 !
In 1962 the first felt-tip pen was invented in Japan by Yukio Horie.
Because it emits a beam of light - which is detected by a special membrane on the computer screen.
Light pen is a mechanical or optical device? i don't know answer for this
Shennae brown
computers is dated between 1949-1952
computers is dated between 1949-1952
Liza Grain invented pen.
this pen was invented for use in space
in 1884 the fountain pen was invented... however the first conventional ballpoint pen was invented in 1938.the first ball point pen was invented in 1888.the first ball point pen was invented in 1888.
I think David Brown invented the spy pen
As you know L.E. Waterman invented the foutain pen.
a pen light :)
function of light pen
the felt tip pen was invented in the 1940s
laszlo biro invented the ballpoint pen in 1938 !