Across
- 2. a video camera that is connected to a computer or integrated in a device and allows its images to be seen online.
- 4. an electroacoustic transducer that converts an electrical audio signal into a corresponding sound.
- 8. an optical device that projects an image onto a surface, commonly a projection screen.
- 10. a hand-held pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of a pointer on a display, which allows a smooth control of the graphical user interface of a computer.
- 11. an instrument for converting sound waves into electrical energy variations which may then be amplified, transmitted, or recorded.
Down
- 1. a panel of keys that operate a computer or typewriter
- 3. a device with parts that cover each ear through which you can listen to something, such as music, without other people hearing.
- 5. is a device that optically scans images, printed text, handwriting or an object and converts it to a digital image
- 6. often used to control video games
- 7. it displays information
- 9. a peripheral machine which makes a persistent representation of graphics or text, usually on paper.