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WorksheetsG6 1st Quarter Computer Technology Review
Total questions: 47
Worksheet time: 24mins
What is the main advantage of a remote control?
It requires a flat surface to operate.
It can be operated from a distance.
It is faster than a keyboard for typing.
It has a very high-resolution pointer.
Which device allows users to select an option by directly touching the screen?
Mouse
Touchpad
Touch Screen
Light Pen
A flatbed scanner is used to:
Input data from hard copy into a computer
Project images onto a large screen
Control a pointer on the screen
Read information from magnetic stripes
What is a significant disadvantage of a digital camera compared to a traditional film camera?
Images cannot be stored.
Images often need to be compressed, using memory.
They are much larger and heavier.
They require film to be developed.
A microphone connected to a computer requires a(n) ________ to convert analogue sound to digital data.
DAC (Digital-to-Analogue Converter)
Actuator
ADC (Analogue-to-Digital Converter)
Transducer
Which sensor would be used in an automatic greenhouse to control watering?
Temperature Sensor
Pressure Sensor
Humidity/Moisture Sensor
pH Sensor
A device that uses a stylus for freehand drawing is a:
Touchpad
Graphics Tablet
Joystick
Webcam
What is a key feature of a webcam?
It has a large internal memory.
It is not connected directly to the computer.
It transmits data directly to the computer with no memory.
It can only take still photographs.
Magnetic Stripe Readers are commonly used on:
Digital Cameras
Credit and Debit Cards
3D Printers
Touch Screens
What is a major advantage of contactless card payments?
They have no transaction limits.
They are slower than chip and PIN.
They are faster than using a magnetic stripe.
They require a signature.
RFID technology is superior to barcodes because:
It requires direct line-of-sight to be read.
Tags can be read from a distance of several meters.
It is a much older and more reliable technology.
It can only store numerical data.
OMR is ideally suited for:
Reading handwritten essays
Converting printed text into editable text
Reading questionnaires with shaded lozenges
Scanning photographs
Which monitor technology is lightweight, consumes less power, and has largely replaced CRT monitors?
OLED
TFT
Dot Matrix
Impact
What is a key disadvantage of laser printers?
They are very noisy.
They can produce ozone and volatile organic compounds.
They have a very low print quality.
They cannot handle large print jobs.
In a control system, a motor is turned on or off by a signal from a(n):
Sensor
ADC
Actuator
Transducer
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 1. True | False: An input device allows data to be entered into a computer.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 2. True | False: A numeric keypad is designed to input only numbers.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 3. True | False: An optical mouse uses a rolling ball to detect movement.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 4. True | False: Touchpads are commonly found on desktop computers.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 5. True | False: A joystick provides a more realistic control for flight simulators than a keyboard.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 6. True | False: Scanners are used to output documents onto paper.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 7. True | False: Digital cameras always provide better image resolution than traditional film cameras.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 8. True | False: Voice recognition software is 100% accurate.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 9. True | False: Graphics tablets are less accurate for drawing than a mouse.
True
False
Instruction – Circle TRUE if the statement is true and FALSE if the statement is not true, but false. 10. True | False: Webcams have built-in memory to store video.
True
False
Instruction – Fill in the answer using the word bank from the table below, one word is only used once.
1. Optical Character __________ is software that converts scanned text into an editable format.
Recognition/OCR
Encryption
Compression
Translation
A(n) __________ is required to convert analogue sensor data into digital data for the computer.
ADC/Analogue-to-Digital Converter
DAC/Digital-to-Analogue Converter
Transistor
Resistor
3. __________ card readers allow payment by holding a card near a terminal without a PIN.
Contactless
Magnetic stripe
Chip-and-PIN
Manual entry
4. __________ is the technology that uses radio waves to capture information from tags.
RFID
Bluetooth
Barcode
Infrared
5. __________ manufacturing is the process of building an object layer by layer.
Additive
Subtractive
Formative
Casting
A(n) __________ converts digital data from a computer into analogue sound for speakers.
DAC/Digital-to-Analogue Converter
ADC/Analogue-to-Digital Converter
CPU/Central Processing Unit
RAM/Random Access Memory
In a control system, a buzzer is an example of a(n) __________ device.
output
input
storage
processing
The __________ on a monitor is made up of tiny red, green, and blue dots.
pixel
icon
cursor
window
9. __________ printers are impact printers often used for multi-part forms like wage slips.
Dot matrix
Laser
Inkjet
Thermal
10. __________ reality uses goggles and sensors to create an artificial environment.
Virtual
Augmented
Mixed
Actual
One advantage of a laptop computer over a desktop computer is:
It is portable and can be used anywhere.
It has a larger monitor.
It requires more power to operate.
It is heavier than a desktop computer.
The primary input method for a tablet is:
Touchscreen
Keyboard
Mouse
Trackball
One function of a smartwatch is:
Tracking physical activity
Cooking food
Printing documents
Washing clothes
The purpose of a compiler is:
To translate source code into machine code
To execute programs directly
To design user interfaces
To store data permanently
State one use of a sensor in a domestic appliance.
Temperature sensor in a washing machine, pressure sensor into a burglar alarm.
Light sensor in a refrigerator to detect food weight.
Sound sensor in a microwave to detect cooking time.
Humidity sensor in a television to adjust volume.
What is the main difference between a webcam and a digital video camera?
A webcam has no memory and transmits directly into a computer.
A webcam records videos on tapes only.
A webcam is used for professional filmmaking.
A webcam has a built-in projector.
State one advantage of using a magnetic stripe reader.
Fast data entry, error-free, secure.
Requires manual data entry, prone to errors.
Slower than typing, less secure.
Needs frequent calibration, unreliable.
What does OMR stand for?
Optical Mark Recognition.
Optical Memory Reader.
Optical Machine Recorder.
Optical Mark Reader.
Name one type of printer that uses a ribbon.
Dot Matrix Printer.
Laser Printer.
Inkjet Printer.
Thermal Printer.
What is the key technological principle behind 3D printing?
Additive Manufacturing (Building objects layer by layer).
Subtractive Manufacturing (Removing material from a solid block).
Injection Molding (Forcing material into a mold).
Casting (Pouring liquid material into a mold and letting it solidify).
Which of the following best explains the key differences between RAM and ROM, including their volatility, purpose, and an example of what is stored in each?
RAM is volatile and used for temporary data storage like running programs, while ROM is non-volatile and stores firmware like the computer's BIOS.
RAM is non-volatile and stores the operating system permanently, while ROM is volatile and used for temporary files.
RAM and ROM are both non-volatile and store user documents and photos.
RAM is used only for graphics processing, while ROM is used only for internet browsing.
Artificial Intelligence (AI) is being used to improve biometric security systems, such as fingerprint or facial recognition, by enhancing accuracy and solving issues like spoofing. What is one way AI contributes to these systems?
AI analyzes biometric data patterns to detect fraud and improve recognition accuracy.
AI replaces all hardware components in biometric systems.
AI eliminates the need for passwords entirely in all security systems.
AI only stores biometric data without processing it.
