An FDIO system consists of a printer, keyboard, and ___.

• A. Speakers
• B. Handset
• C. Display
• D. CD ROM Drive

Answer: (C)

FDIO systems are about the way a user interacts with a computer or terminal, combining input and output devices. The keyboard handles input, and the printer provides a tangible output. The display is the on-screen output that lets you see prompts, status, and results in real time. Without a display, you wouldn’t have a visual interface to monitor or control the system, so it completes the basic trio of human–machine interaction.

The other options don’t fit as the core interaction components: speakers would add audio output but aren’t part of the essential FDIO visual/interface suite; a handset is a telephony device, not a standard computer input/output component; a CD-ROM drive is a storage device, not an interface output or display mechanism.