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2. Camera lucida - Wikipedia

   en.wikipedia.org/wiki/Camera_lucida

   The name "camera lucida" (Latin for 'light chamber') is intended to recall the much older drawing aid, the camera obscura (Latin for 'dark chamber'). There is no optical similarity between the devices. The camera lucida is a lightweight, portable device that does not require special lighting conditions.

3. Lightbox - Wikipedia

   en.wikipedia.org/wiki/Lightbox

   The fabric reflectors that attach to studio lighting via a connector to create soft lighting by diffusing the strobe flash are called "light boxes". [7] They generally come in various rectangle or octagon shapes. Interior reflectors can be white, silver or gold to alter the temperature of light. Baffling inserts are also available.

4. Camera obscura - Wikipedia

   en.wikipedia.org/wiki/Camera_obscura

   As a drawing aid, it allowed tracing the projected image to produce a highly accurate representation, and was especially appreciated as an easy way to achieve proper graphical perspective. Before the term camera obscura was first used in 1604, other terms were used to refer to the devices: cubiculum obscurum , cubiculum tenebricosum , conclave ...

5. Light table - Wikipedia

   en.wikipedia.org/wiki/Light_table

   Light table at Tito's bunker Draftsman using light table. A light table [1] is a viewing device that is used to review photographic film or artwork placed on top of it. A horizontal form of a self-standing lightbox, it provides even illumination of the subject from below through a translucent cover and fluorescent lights that emit little heat.

6. IBM Shoebox - Wikipedia

   en.wikipedia.org/wiki/IBM_Shoebox

   It had a display of ten small lamp lights labeled with the digits 0 through 9 and an attached microphone. Speaking the name of the digit into the microphone would cause the appropriate digit lamp to light. [1] Inside the box were a power supply, three analog audio filters and some (presumably) Diode-Resistor-Logic circuitry.

7. Box-drawing characters - Wikipedia

   en.wikipedia.org/wiki/Box-drawing_characters

   Box-drawing characters, also known as line-drawing characters, are a form of semigraphics widely used in text user interfaces to draw various geometric frames and boxes. These characters are characterized by being designed to be connected horizontally and/or vertically with adjacent characters, which requires proper alignment.