Which device is used to connect a computer to a projector?
2026
Which device is used to connect a computer to a projector?
Answer: A. HDMI Cable — ConceptA display interface carries image signals from a source device to a display device. The connector must match ports supported by both devices; some…
- A.
HDMI Cable
- B.
Keyboard
- C.
Mouse
- D.
Scanner
Show answer & explanation
Correct answer: A
Concept
A display interface carries image signals from a source device to a display device. The connector must match ports supported by both devices; some interfaces can also carry audio.
Application
A computer is the source and a projector is the display. HDMI is a digital audio-video interface, so an HDMI cable can carry the computer’s display signal to a projector with compatible HDMI ports.
Contrast
HDMI cable: carries digital video and audio between compatible HDMI ports.
Keyboard: sends keystrokes and commands to a computer as user input.
Mouse: sends pointing and selection input to a computer.
Scanner: converts paper documents or images into digital input.
Cross-check
The required device must provide a display-signal path. Among the listed values, the HDMI cable has that interface function; the other three are input peripherals. Therefore, the answer is HDMI Cable.