Computer hardware MCQs — Practice & Prepare

✅ Correct answer: output Once a digital picture has been captured and processed, the resulting printed copy is considered the output — the final, usable result delivered to the user.

✅ Correct answer: Speech recognition software Speech recognition software is designed to interpret spoken voice data and convert it into words or text that the computer can understand and process.

✅ Correct answer: keyboard A dumb terminal typically consists of just a screen and a keyboard, with no independent processing power of its own — it simply sends input to, and displays output from, a central computer.

✅ Correct answer: Intelligent terminal An intelligent terminal, unlike a dumb terminal, has its own processing capability and can be programmed by the user, making it user-programmable.

✅ Correct answer: Output Computer speakers and headphones are output devices, converting digital audio signals from the computer into audible sound for the user.

✅ Correct answer: All of these A touch screen is unique among these options because it functions as both an input device (accepting touch commands) and an output device (displaying visual content) simultaneously.

✅ Correct answer: output unit The output unit is responsible for delivering the final, processed results from the computer to the user, typically through devices like monitors or printers.

✅ Correct answer: View or Print Data Output devices allow a user to view or print data that has been processed by the computer, presenting the final results in a usable form.

✅ Correct answer: Pixel A pixel (short for 'picture element') is the smallest single unit of an image displayed on a computer screen, with many pixels combining to form the full picture.

✅ Correct answer: Output A computer monitor is an output device, displaying processed visual data — text, images, and video — for the user to view.

✅ Correct answer: screen output Soft copy refers to screen output — digital content displayed on a monitor — as opposed to hard copy, which is a permanent, printed version on paper.

✅ Correct answer: closer together the pixels A higher-resolution monitor packs its pixels closer together, resulting in a sharper, more detailed image, since more picture elements fit within the same physical screen area.

✅ Correct answer: monitor The monitor (screen) is the most familiar and commonly used output device for microcomputers, displaying visual output to the user in real time.

✅ Correct answer: rectangular A CRT (Cathode Ray Tube) is rectangular in shape, matching the typical shape of older television and computer monitor screens.

✅ Correct answer: vacuum tube A CRT (Cathode Ray Tube) contains a vacuum tube, inside which an electron beam is fired at a phosphorescent screen to create the image.

✅ Correct answer: refresh rate The refresh rate is the rate at which a CRT screen's image is redrawn (scanned) per second, measured in Hertz (Hz), affecting how smooth and flicker-free the display appears.

✅ Correct answer: Printer A printer provides hard copy output — a permanent, physical, printed version of digital content — on paper.

✅ Correct answer: CPM Printer speed is commonly measured in units like CPM (Characters Per Minute) for character-based printers, though PPM (Pages Per Minute) is used for page printers — this source specifies DPI is not the correct speed unit but was selected among the given options as CPM.

✅ Correct answer: Dot matrix A daisy wheel printer, which prints one character at a time using a wheel-shaped print head, cannot print more than one character simultaneously, unlike line or page printers.

✅ Correct answer: paper movements The speed of a line printer, which prints an entire line of text at once, is largely limited by the mechanical speed at which the paper can be advanced/moved through the printer.