1
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overhead projector
|
United States
|
Commonly used in educational or professional presentations, especially in the past, before the widespread adoption of digital projectors.
|
1
|
2
|
overhead projector
|
United States
|
Commonly used in classrooms and presentations before the widespread use of digital projectors.
|
1
|
3
|
overhead projector
|
United States
|
Commonly used in classrooms and meetings for presenting material
|
1
|
4
|
overhead projector
|
United States
|
Commonly used in classrooms and presentations before the rise of digital projectors and screens
|
1
|
5
|
overhead projector
|
United States
|
Commonly used in schools and business presentations before the widespread use of digital projectors
|
1
|
6
|
projector
|
United States
|
Commonly used for presentations in business meetings and conferences
|
1
|
7
|
projector
|
United States
|
Commonly used in schools and offices for presentations and lectures.
|
1
|
8
|
projector
|
United States
|
Commonly used in educational and business settings for presentations and lectures
|
1
|
9
|
projector
|
United States
|
Commonly used in business meetings and educational institutions
|
1
|
10
|
slide projector
|
United States
|
Commonly used in educational or professional presentations, but becoming less common due to digital technology
|
1
|
11
|
slide projector
|
United States
|
Commonly used in educational and business presentations before the advent of digital projectors
|
1
|
12
|
slide projector
|
United States
|
Commonly used in schools and business presentations before digital projectors became widespread
|
1
|
13
|
slide projector
|
United States
|
Commonly used in the past for business presentations and educational purposes, but now largely obsolete due to the prevalence of digital projectors.
|
1
|
14
|
slide projector
|
United States
|
Commonly used for presentations in educational and business settings
|
1
|