Computer Display Technologies Quiz

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Questions and Answers

Which of the following is a disadvantage of using modern display technologies compared to CRT monitors?

Produce less glare

Emit less radiation

Consume less power

Critical angle of viewing (correct)

Public information points are a primary output device for computers.

False

What is an advantage of using lightweight displays over CRT monitors?

No weight hazards

Frequent usage of computers can lead to _____, which is a common ergonomic issue.

RSI Signup and view all the answers

Match the following terms with their descriptions:

Automatic Teller Machines = Facilitates cash withdrawals and deposits EFTPOS = Enables electronic payments at points of sale PDA = Personal Digital Assistant for mobile tasks Smartphones = Integrates communication and computing functions Signup and view all the answers

Which of the following statements is true about TFT monitors?

They can lead to headaches and eyesight problems. Signup and view all the answers

LED monitors have a shorter lifespan compared to LCD monitors.

False Signup and view all the answers

What causes pixel color in TFT monitors?

The intensity of red, green, or blue transistors. Signup and view all the answers

TFT technology is responsible for the rapid development of __________ computers.

laptop Signup and view all the answers

Match the following characteristics with the correct monitor type:

TFT Monitor = Lower power consumption LED Monitor = Greater contrast and vivid color CRT Monitor = Heavier and bulkier Touch Screen = Automatic selection without a pointing device Signup and view all the answers

What is a disadvantage of using TFT monitors?

They can cause glare leading to headaches. Signup and view all the answers

Prolonged screen time can lead to eye strain from images being too sharp.

True Signup and view all the answers

Mention one advantage of LED monitors over traditional LCD monitors.

Lighter and thinner design. Signup and view all the answers

What is a disadvantage of using an IPS/LCD monitor?

Expensive Signup and view all the answers

IPS technology provides better visibility from different angles.

True Signup and view all the answers

What is a common issue faced by users when several people view a monitor simultaneously?

Visibility and sensitivity decreases Signup and view all the answers

The _____ can be used to direct presentations without being tied to the computer.

remote control Signup and view all the answers

Match the type of device with its characteristic:

IPS/LCD Monitor = Liquid crystal diodes Multimedia Projector = Projects images to a large screen Light Pen = Used for drawing on the screen Remote Control = Operates devices from a distance Signup and view all the answers

Which input types can multimedia projectors accept?

Both analog and digital signals Signup and view all the answers

Prolonged screen time has no impact on health.

False Signup and view all the answers

What issue is caused by constant usage of a screen?

Screen gets dirty Signup and view all the answers

Study Notes

ICT Notes (CAIE IGCSE 0417)

This document summarizes the theory syllabus of CAIE IGCSE ICT (0417)
The material covers various topics including computer systems, operating systems, types of computers, and the impact of emerging technologies.

Types and Components of Computer Systems

Hardware: Tangible, physical components like the processor, motherboard, RAM, ROM, video cards, internal storage (HDD, SSD), and external storage (monitor, keyboard, mouse, printer).
Software: Programs that control hardware and enable actions (application software for tasks, system software like the operating system).
Internal Hardware Devices: Processor, motherboard, RAM (Random Access Memory), ROM (Read-Only Memory), Video/Sound Cards, Internal Storage(hard disk drive & solid state drive).
External Hardware Devices: Monitor, keyboard, mouse, printer, external storage devices.
Software Types: Application software (performs tasks), system software (controls hardware).
CPU: Central Processing Unit (interprets and executes computer commands).

Operating Systems

CLI (Command Line Interface): User types commands to interact, requires knowledge of commands.
GUI (Graphical User Interface): Uses icons and mouse interaction, easier to use than CLI.

Types of Computers

Desktop/Personal Computers: General-purpose, made up of separate components (monitor, keyboard, mouse, CPU).
Laptops/Notebooks: Portable, single unit, integrated components.
Smartwatches: Portable devices with a smaller screen, often used for health tracking and notifications.
Tablet Computers: A small hand-held device for performing various functions like PCs or smartphones.
Mainframe Computers: Powerful computer systems for running large-scale applications (such as banking).

Impact of Emerging Technologies

Artificial Intelligence (AI): Aims to mimic human intelligence.
Biometrics: Identifying individuals through unique body characteristics (fingerprints, retina, iris).
Vision Enhancement: Systems for users with visual impairments.
Robotics: Programmed machinery for tasks.
Quantum Cryptography: Secure data transfer technology.
CAT (Computer Assisted Translation): Translation software assisting human translators

Input and Output Devices

Keyboards: Input device for text entry.
Numeric Keypads: Input device for numbers only.
Mouse: Input device for controlling a pointer on-screen.
Touchpad: Input device used in laptops, controlling the pointer.
Tracker Ball: Input device similar to a mouse.
Remote Control: Used to control devices remotely.
Joysticks: Used in games, simulators, etc., controlling a pointer's movement.
Touch Screen: Input device, user touches screen to make selections.
Scanners: Input device for converting physical documents into digital format.
Digital Cameras: Capture and store images and video.
Video Cameras: Record moving images.
Microphones: Input sound.
Sensors: Measure physical quantities like temperature, pressure, light, etc.
Graphic Tablets: Stylus-based drawing and input device.
Webcams: Video capture devices for computers.

Storage Devices and Media

Fixed Hard Drives/Drives: Main storage on computers.
Portable & Removable Hard Disks/Drives: External storage, backup, transfer data between devices.
Magnetic Tapes & Drives: Method of data storage, frequently used for long-term storage and backup.
CD-ROM/DVD-ROM: Storage for data, read-only.
CD-R/DVD-R: Recordable data (once).
CD-RW/DVD-RW: Re-writable data (many times).
Blu-Ray Discs: High-capacity storage for videos/data.
Solid State Drives (SSDs): Fast, non-mechanical storage.

Networks and Their Effects

Router: The device that enables communication between different networks (sending packets of data)
Hub: A device that sends data to all devices on the same network, regardless of the intended recipient
Bridge: Device connecting dissimilar networks.
Switch: Device that directs data only to intended devices on a network.
Modems: Convert digital signals to analog ones and vice-versa for long-distance transmission, often used for internet connections.

Data Manipulation and Databases

Databases: Store data in structured format.
Relational databases: Organize data in multiple tables linking related information.

ICT Applications

Communication applications (e.g., email, social networking): Used for messaging, sharing information, creating communities.
Office and business applications (e.g., spreadsheets, databases): Used for data management, calculation, and analysis.
Multimedia presentations (e.g., slide shows, video): Used for presenting information interactively to large audiences.
Web authoring, e.g., creating and maintaining a website.

Health and Safety

Physical Safety: Hazards like tripping over wires, heavy items falling, and fire hazards.
Ways of eliminating hazards: Using cable ducts, ensuring appropriate support, fire safety equipment, etc.
Health Effects: Eye strain, back/neck problems, RSI, etc..

E-Safety

Risks: Hacking, viruses, malware, inappropriate websites, unsafe practices online.
Solutions: Strong passwords, firewall, anti-virus, safe online behavior.
Data protection: Importance of safeguarding personal information.

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Description

Test your knowledge on the advantages and disadvantages of modern display technologies compared to CRT monitors. This quiz covers key concepts such as ergonomic issues associated with frequent computer use, and specific characteristics of TFT monitors. Assess your understanding of different types of display technologies and their applications.