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What is the primary role of information in today's society?
What is the primary role of information in today's society?
Information Technology solely refers to computing with no relation to communication technology.
Information Technology solely refers to computing with no relation to communication technology.
False
What does the term 'data processing' refer to?
What does the term 'data processing' refer to?
The manipulation of data/information to produce meaningful output.
Information Technology is the technology that merges computing with __________ communication links.
Information Technology is the technology that merges computing with __________ communication links.
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Match the following terms with their definitions:
Match the following terms with their definitions:
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Which of the following is NOT mentioned as a field of computer applications?
Which of the following is NOT mentioned as a field of computer applications?
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Which of the following is a key component of Information Technology?
Which of the following is a key component of Information Technology?
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The computer system requires only three main aspects of data handling.
The computer system requires only three main aspects of data handling.
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Digital convergence refers only to the telecommunications industry.
Digital convergence refers only to the telecommunications industry.
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What term is used to refer to the hardware and programs involved in a computer system?
What term is used to refer to the hardware and programs involved in a computer system?
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What ensures that computer users can access information anywhere and anytime?
What ensures that computer users can access information anywhere and anytime?
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A computer processes data into useful __________.
A computer processes data into useful __________.
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Match the terms with their definitions:
Match the terms with their definitions:
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Which of the following is NOT classified as an input device?
Which of the following is NOT classified as an input device?
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What is the primary purpose of input devices?
What is the primary purpose of input devices?
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Function keys have a fixed use across all software applications.
Function keys have a fixed use across all software applications.
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Information Technology has not significantly impacted communication methods.
Information Technology has not significantly impacted communication methods.
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What phrase is used to describe the modern advancements in technology that create a 'Global Village'?
What phrase is used to describe the modern advancements in technology that create a 'Global Village'?
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What is the common name for a standard keyboard layout?
What is the common name for a standard keyboard layout?
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The ________ key is used to escape to the previous screen in various programs.
The ________ key is used to escape to the previous screen in various programs.
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Which type of key will produce upper case letters when activated?
Which type of key will produce upper case letters when activated?
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Name one example of a source data-entry device.
Name one example of a source data-entry device.
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Match the following components with their functions:
Match the following components with their functions:
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The numeric keys on a keyboard are used exclusively for entering numbers.
The numeric keys on a keyboard are used exclusively for entering numbers.
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What does the Print Screen key do?
What does the Print Screen key do?
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The Scroll Lock key affects the movement of the cursor on the screen.
The Scroll Lock key affects the movement of the cursor on the screen.
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Name one function of the Pause key.
Name one function of the Pause key.
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The _______ is an input device that causes a cursor to move on the screen.
The _______ is an input device that causes a cursor to move on the screen.
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Match the following keys with their functions:
Match the following keys with their functions:
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Which of the following is NOT a pointing device?
Which of the following is NOT a pointing device?
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A trackball is a fixed device that does not move, and the ball inside it is rotated to move the cursor.
A trackball is a fixed device that does not move, and the ball inside it is rotated to move the cursor.
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What type of device is a touch pad?
What type of device is a touch pad?
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What is XGA capable of displaying at a resolution of 1024 x 768 pixels?
What is XGA capable of displaying at a resolution of 1024 x 768 pixels?
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Flat-panel displays consume more power than CRT displays.
Flat-panel displays consume more power than CRT displays.
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What term is used to describe 24-bit color?
What term is used to describe 24-bit color?
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An impact printer forms images by striking a mechanism against an inked ___.
An impact printer forms images by striking a mechanism against an inked ___.
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Match the type of display technology with its description:
Match the type of display technology with its description:
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Which of the following is NOT a type of flat-panel display technology?
Which of the following is NOT a type of flat-panel display technology?
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The CRT technology is used only in computer monitors.
The CRT technology is used only in computer monitors.
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What is the primary mechanism through which a CRT generates an image?
What is the primary mechanism through which a CRT generates an image?
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What is a bit?
What is a bit?
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A byte is made up of 16 bits.
A byte is made up of 16 bits.
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What is the approximate number of bytes in a gigabyte?
What is the approximate number of bytes in a gigabyte?
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A kilobyte is equivalent to _____ bytes.
A kilobyte is equivalent to _____ bytes.
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Which of the following correctly defines a computer word?
Which of the following correctly defines a computer word?
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How many bytes are there in 240 MB of memory?
How many bytes are there in 240 MB of memory?
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Match the following storage units with their abbreviations:
Match the following storage units with their abbreviations:
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A terabyte is approximately equal to one million bytes.
A terabyte is approximately equal to one million bytes.
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Study Notes
Information Technology Overview
- Information is the key factor in today's era, impacting all aspects of business, education, and more.
- Information Technology merges computing with high-speed communication to access data globally.
- Instant data sharing is enabled by networked computer systems.
- Digital convergence is the integration of various industries through electronics.
Modern Computing Scenario
- Modern Information Technology has expanded computing and communication, using satellites, fiber optics, and more.
- Artificial intelligence, web-based applications, e-commerce, and multimedia are emerging fields.
- Information Technology is revolutionizing our daily lives and societies.
Hardware and Software
- A computer processes input data, outputs information, and stores data.
- Hardware refers to the physical components of a computer.
- Input devices accept data; output devices display the processed information.
- Software controls and manages hardware, enabling specific tasks.
- Systems software manages and enables application software.
Hardware Devices
- Input Devices: Keyboards, mouses, mics, etc.
- Output Devices: Printers, monitors, speakers, etc.
- Main Memory: RAM, ROM,
- Secondary Storage: Hard disks, floppy disks, CDs, etc.
- I/O Devices: Terminals, touch screens.
- Networking Devices: Modems, bridges, routers, cables.
Software Classification
- System Software: Manages computer resources (e.g., operating systems, utilities).
- Application Software: Solves specific problems (e.g., word processors, games.
Input and Output devices
- Input Devices: Keyboards, mice, touchpads, scanners, etc.
- Output Devices: Monitors, printers, speakers, etc.
Keyboard
- Standard QWERTY layout.
- Function Keys: Execute specific commands for particular software.
- Other keys: Control, alt, enter, space, etc, with different purposes based on software.
- Numeric Keypad, and cursor keys.
- Special Function keys
Pointing Devices
- Mouse: A hand-held device that moves a pointer on the screen.
- Trackball: A ball that moves the pointer on rotation.
- Touchpad: A touch-sensitive surface that controls the cursor.
- Trackpad: Similar to a touchpad
- Light pen: A pen-like device to select objects on a screen.
- Digitizing/Graphic tablet: A tablet and stylus to copy/create images.
Scanning Devices
- Bar-code Readers: Interpret vertical lines in barcodes.
- MICR (Magnetic Ink Character Recognition): Reads characters in magnetic ink.
- OMR (Optical Mark Recognition): Reads filled-in ovals/marks.
- OCR (Optical Character Recognition): Reads printed text or images.
- Fax Machine
Output Devices
- Monitors: Visual display of information.
- Printers: Produce hard copies of text and images.
- Speakers/Headphones: Produce sound.
- Plotters: Create large-format drawings.
Display Screens
- Cathode-Ray Tubes (CRTs) - Older display technology, large bulky screens.
- Flat-Panel Displays (LCDs, LEDs, etc.) - Newer, thinner, and more energy-efficient.
- Different specifications like size, color, and resolution, affects price and usage.
Printers
- Impact Printers: Use a mechanism to physically strike paper.
- Non-Impact Printers: Use other technologies to produce an image.
- Dot Matrix, Daisy Wheel, and Laser.
System Development Life Cycle (SDLC)
- System Components: Hardware, software, people, data, and communication.
- Software Development Life Cycle: A process to develop quality software.
- Phases: Preliminary investigation, analysis, design, coding, testing, implementation, and maintenance.
System Software vs Application Software
- System Software: Manages computer resources.
- Application Software: Specific tasks/goals/needs-driven software.
- System software, like operating systems, creates a platform for running applications.
- Examples of application software include Microsoft Word and many others.
Basic Units of Data Storage
- Bit (Binary digit): The smallest unit of data (0 or 1).
- Byte: A group of 8 bits representing a character.
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Description
Explore the key elements of Information Technology, including its impact on business and education. Learn about the integration of computing and communication technology and discover how modern advancements like AI and e-commerce are reshaping our lives.
