What is an overhead projector (OHP)?
Q: What is an overhead projector (OHP)?
A: An overhead projector (OHP) is a device that projects images from either a computer/laptop or images created in real time.
Q: Where were overhead projectors commonly used?
A: Overhead projectors were often used in classrooms to showcase presentations on paper for a group of students to view.
Q: How have overhead projectors evolved over time?
A: Overhead projectors have evolved to project things on technological devices, and now have a plastic frame and fan that keeps the machine cool when it is used for long periods of time.
Q: What are some newer technologies that have replaced overhead projectors in classrooms and conference rooms?
A: Newer technologies such as document cameras and interactive whiteboards have replaced overhead projectors in classrooms and conference rooms.
Q: Why is the device sometimes called a "Belshazzar"?
A: The device is sometimes called a "Belshazzar" after Belshazzar's feast.
Q: What is the purpose of the plastic frame on top of the projector?
A: The plastic frame on top of the projector is used to hold the materials being projected onto the screen.
Q: What is the purpose of the fan on the projector?
A: The fan on the projector keeps the machine cool so that it won't overheat when used for long periods of time.
