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GK One-Line Question & Answer

15541+ short questions with short answers, covering every category and sub-category on the site — no long articles to scroll through. Good for a fast recap before an exam, or a few minutes of daily practice.

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Computer Fundamentals → Introduction to Computer 26

The ILLIAC IV was a?
Massively parallel supercomputer
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Which computer used the first mouse?
Xerox Alto
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The Intel 8086 processor gave rise to which architecture?
x86
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Which generation computers were also called 'Minicomputers'?
Third
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Analog computers work on?
Continuous physical quantities
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Which of the following is a hybrid computer?
ECG machine
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Digital computers work on?
Discrete binary values
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Special purpose computers are designed for?
One specific task
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Quantum computers use which fundamental unit?
Qubit
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Capacitive touchscreen works using?
Change in electrical capacitance
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Resistive touchscreen works using?
Two conductive layers pressed together
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TWAIN is?
Standard API/protocol for scanner-software communication
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Pressure sensitivity in a graphics tablet stylus is measured in?
Levels (e.g., 8192 levels)
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Which pointing device is most precise for CAD/CAM applications?
Graphics tablet with stylus
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Force feedback device provides?
Tactile resistance/vibration simulating physical forces
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Voice recognition input works by?
Analyzing frequency patterns to recognize words
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Gesture recognition input uses?
Camera/sensors to interpret body movements
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Brain-Computer Interface (BCI) receives input from?
Neural signals from the brain
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EEG-based BCI measures?
Electrical activity of the brain
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MIDI is used for?
Musical instrument digital input interface
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Which type of barcode stores more data in smaller space?
QR code (2D)
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DataMatrix barcode is used for?
Industrial parts, pharmaceuticals (small items)
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Pen input on tablet computers uses which technology primarily?
Both EMR and capacitive
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Which sense does haptic feedback primarily stimulate?
Touch
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CMOS sensor in cameras compared to CCD?
Uses less power and is cheaper to manufacture
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Which input mode does a graphics tablet use when stylus is near but not touching?
Hover mode
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Computer Fundamentals → Internet Basics 1

Which decade saw the birth of the internet (ARPANET)?
1960s
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Computer Fundamentals → Input Devices 13

Which input device uses Electromagnetic Resonance (EMR) technology?
Graphics tablet (stylus)
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Which type of scanner has the highest resolution capability?
Drum
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3D mouse (6DoF device) is used in?
3D modeling and virtual reality navigation
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A keyboard's N-key rollover means?
N simultaneous keypresses all register correctly
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Anti-ghosting in keyboards prevents?
Multiple keys from appearing as one keypress
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Mechanical keyboard switches are preferred for?
Tactile/audible feedback and durability
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Which input device is used in cockpits for precise flight control?
HOTAS (Hands On Throttle And Stick)
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Fingerprint scanner working principle is?
Optical, capacitive, or ultrasonic sensing
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Iris scanner identifies users based on?
Unique pattern of the iris
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Retinal scanner scans?
Unique blood vessel pattern on retina
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Which input device is used in medical imaging to input patient data?
Touch panel with specialized medical keyboard
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Which input device is used to input coordinates in GIS?
Digitizing tablet/stylus over maps
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CCD in a scanner stands for?
Charge-Coupled Device
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