Digital Technology and Computers Quiz
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Questions and Answers

What are the two discrete values used in binary numbers?

  • On and off
  • Zero and one (correct)
  • True and false
  • Positive and negative

Which component of a computer is most similar to the human brain?

  • Central Processing Unit (CPU) (correct)
  • Memory
  • Input/output devices
  • Transistor

What is the primary function of digital devices like LED TVs and monitors?

  • To store digital information
  • To process digital signals
  • To record audio information
  • To display visual information or data (correct)

Which of the following best describes a digital device?

<p>An electronic device that can create, generate, send, share, communicate, receive, store, display, or process information (C)</p> Signup and view all the answers

How does the text characterize computers' ability to process information?

<p>They can only respond to questions for which they have been programmed (C)</p> Signup and view all the answers

What are transistors used for in digital systems?

<p>To act as electrical switches representing binary values (B)</p> Signup and view all the answers

Which of the following is NOT a typical function of an electronic camera compared to a conventional camera?

<p>Record audio alongside visual information (A)</p> Signup and view all the answers

How are computer memory and human memory conceptually similar?

<p>They both serve as storage locations for information accessible to them (A)</p> Signup and view all the answers

Which of the following is NOT identified as a consequence of addiction to online platforms?

<p>Increased social interaction (B)</p> Signup and view all the answers

What is the primary reason that data must be converted to a binary form for computer processing?

<p>Because computers understand only machine-readable binary code. (B)</p> Signup and view all the answers

What does the term 'digital' mean in the context of data representation, based on its etymology?

<p>It is derived from the same source as 'digit' and 'finger' (D)</p> Signup and view all the answers

How does media manipulation use digital editing tools, according to the text?

<p>To alter information for an intended effect on public perception. (A)</p> Signup and view all the answers

Which of the following best describes analog data according to the text provided?

<p>Represented by a value from a continuous range of real values. (B)</p> Signup and view all the answers

What was George Stibitz's purpose in using the term 'digital' in 1942?

<p>To describe electrical pulses in a calculating device. (C)</p> Signup and view all the answers

What does the text indicate about the nature of the physical world?

<p>It is typically considered to be analog. (C)</p> Signup and view all the answers

What is the common representation of digital data in most information systems?

<p>A string of binary digits (bits). (D)</p> Signup and view all the answers

Which of these accurately describes how numeric data is represented?

<p>Using the binary number system (base 2 with 0s and 1s). (C)</p> Signup and view all the answers

How many bytes are in a kilobyte?

<p>1000 bytes (A)</p> Signup and view all the answers

What is the primary distinction between numeric data and character data?

<p>Numeric data is used in arithmetic operations, while character data is not used in arithmetic operations. (A)</p> Signup and view all the answers

In the context of digital devices what is the smallest unit of data called?

<p>Bit (C)</p> Signup and view all the answers

What is the significant impact of the Internet on media in the 1990s?

<p>It changed media from production to reception by users (B)</p> Signup and view all the answers

Which of these is NOT a characteristic of digital media?

<p>Data is represented using analog signals (B)</p> Signup and view all the answers

What does the term 'digital' signify in the context of digital media?

<p>All data is converted into numeric form. (D)</p> Signup and view all the answers

Which of the following options best describes the shift in media from analog to digital?

<p>A shift leading to the convergence and divergence of different media. (B)</p> Signup and view all the answers

Why is expressing symbols digitally more complex than converting analog information?

<p>Symbols are discrete, requiring polling and encoding rather than just sampling and quantization. (A)</p> Signup and view all the answers

What is the main risk associated with polling switch states at regular intervals?

<p>The risk of multiple switch presses between polling intervals not being detected. (C)</p> Signup and view all the answers

What is the purpose of a dedicated processor for switch polling and encoding?

<p>To avoid overloading the main CPU with input processing. (D)</p> Signup and view all the answers

How are switch states typically represented in devices with a few switches?

<p>As a single word of bits, with 0 representing 'released' and 1 representing 'pushed'. (B)</p> Signup and view all the answers

Why is a keyboard matrix used to identify the pressed key?

<p>To reduce the number of switches the keyboard has and therefore the number of bit required to represent the switches. (D)</p> Signup and view all the answers

What occurs when a keyboard processor detects a key change?

<p>It sends a signal containing the key's scan code and new state to the CPU. (C)</p> Signup and view all the answers

Why might using a bespoke character encoding be more appropriate than ASCII for a specific application?

<p>To accommodate the specific functionalities of the application. (B)</p> Signup and view all the answers

What is the primary distinction between analog and digital data representation?

<p>Analog data uses an infinite scale of values, while digital data is stored as discrete digits. (D)</p> Signup and view all the answers

What is identified as a potential main cause of significant governmental surveillance, according to industry experts?

<p>The absence of constitutional mechanisms that allow monitoring of governmental activities. (D)</p> Signup and view all the answers

What term is often used interchangeably with 'online hate'?

<p>Cyberbullying (D)</p> Signup and view all the answers

Which activity is NOT typically associated with cyberbullying?

<p>Sharing positive comments about someone's achievements on social media. (D)</p> Signup and view all the answers

What effects are demonstrated by victims of cyberbullying?

<p>Increased suicidal thoughts, emotional breakdowns, and lower self-esteem. (A)</p> Signup and view all the answers

Why are discussions about what constitutes hate speech and where to identify racism important in digital media?

<p>Because these are critical aspects of online engagement and interaction, especially for young users. (C)</p> Signup and view all the answers

Which of the following best describes the concept of 'interactivity' in the context of digital media?

<p>The user's capacity to influence the context and form of mediated communication. (B)</p> Signup and view all the answers

What is the primary characteristic of hypertext in digital media?

<p>It combines traditional text with interactive linking for a non-linear structure. (D)</p> Signup and view all the answers

How does the concept of 'dispersion' relate to the nature of digital media?

<p>It describes the spread of digital media in terms of consumption and production. (C)</p> Signup and view all the answers

The concept of 'virtuality' in digital media is primarily associated with which aspect?

<p>The immersive and interactive experiences, often involving the Internet, 3D, and multimedia. (C)</p> Signup and view all the answers

What does 'telepresence' refer to when discussed in the context of digital media?

<p>The feeling of simultaneously existing in a physical and a digital environment. (D)</p> Signup and view all the answers

Which individual is credited with conceptualizing codes to be machine-calculated in the early 1800s?

<p>Charles Babbage (C)</p> Signup and view all the answers

Who wrote the first instructions for calculating numbers using machines?

<p>Ada Lovelace (D)</p> Signup and view all the answers

In what year did the effective timeline of digital media begin with the invention of an electromechanical machine?

<p>1941 (C)</p> Signup and view all the answers

Flashcards

Digital Device

A digital device that uses electronic signals to process information and perform tasks.

Binary System

A system that uses only two discrete values (0 or 1) to represent information.

CPU (Central Processing Unit)

The central processing unit of a computer, responsible for executing instructions and performing calculations.

Computer Memory

The electronic storage space within a computer where data is temporarily held for processing.

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Human-Computer Interaction

How a user interacts with a computer, including input methods (keyboard, mouse) and output methods (monitor, printer).

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Input Device

Any digital device that provides information to a computer, such as a keyboard, mouse, or scanner.

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Output Device

Any digital device that receives information from a computer, such as a monitor, printer, or speaker.

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LED TV

A type of television that uses digital signals to display images.

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Data Representation

The way data is stored, processed, and transmitted.

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Digital Data

Information expressed using discrete digits, like 0s and 1s.

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Analog Data

Information represented using a continuous range of values.

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Polling

Periodically checking the status of input devices, like buttons or switches.

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Analog-to-Digital Conversion

The process of converting analog signals into digital data.

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Scan Code

The code used to represent a key pressed on a keyboard or other device.

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Program

A set of instructions to be executed by a computer or device.

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2002: Digital Dominance

The year humans started storing more information digitally than analog.

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Numeric Data

Numbers used in calculations, like annual income or age.

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Character Data

Letters, symbols, and numerals not used for calculations, like names or addresses.

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Character Codes

Codes used by digital devices to represent character data, like ASCII, EBCDIC, and Unicode.

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Bit

The smallest unit of data in a computer, represented as 0 or 1.

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Byte

8 bits combined; it represents a unique character.

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Kilobyte (KB)

1000 bytes

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Megabyte (MB)

1 million bytes

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Gigabyte (GB)

1 billion bytes

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What is data?

Data is information that represents people, events, things, and ideas using symbols.

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What is the difference between data and information?

Data refers to the raw symbols representing information, while information provides meaning and context to that data.

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What is the difference between analog and digital data?

Analog data is represented by values within a continuous range, while digital data uses discrete symbols with a finite number of values.

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What is binary data?

Binary data is digital data represented by bits, each of which can be either 0 or 1.

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What is digital data?

Digital data is information expressed as a sequence of discrete symbols, with each symbol taking on a finite number of values from a specific alphabet.

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What is digital media manipulation?

The manipulation of digital media involves altering or editing images, videos, and sounds digitally for various purposes.

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How can digital media manipulation be used?

Digital media manipulation can be used to influence public perception and create a particular narrative by altering the information presented.

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How has technology impacted digital media manipulation?

The advancement of technology has made it easier for anyone to edit digital media, increasing the potential for manipulation.

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Cyberbullying

Online harassment using electronic communication, often involving spreading rumors, threats, hate speech, or sharing personal information.

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Hate Speech

Speech or actions that express hatred, prejudice, or intolerance towards a person or group based on their race, religion, gender, sexual orientation, or other protected characteristics.

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Online Hate

The use of technology, particularly the internet and social media, to spread hate speech and engage in cyberbullying.

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Harmful Effects of Cyberbullying

The potential negative consequences of cyberbullying, including emotional distress, decreased self-esteem, suicidal thoughts, and social isolation.

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Absence of Constitutional Provisions for Surveillance Monitoring

The lack of strong legal frameworks and regulations that enable monitoring of government surveillance activities.

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Compression in Digital Media

The ability to compress and decompress data using algorithms, enabling efficient storage and distribution of large amounts of information.

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Interactivity in Digital Media

The degree to which a medium allows users to influence the content and form of communication. It's a defining characteristic of digital media.

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Hypertext in Digital Media

A non-linear form of text where content is organized into nodes (blocks of text) connected by links. This allows for interactive branching and exploration.

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Dispersion of Digital Media

The widespread diffusion of digital media, both in terms of consumption and production, due to the proliferation of technologies.

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Virtuality in Digital Media

The merging of digital technologies with analog media and telecommunications networks, creating virtual environments and experiences.

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Telepresence in Digital Media

The potential of digital media to alter our perception of presence, allowing us to exist simultaneously in both physical and constructed environments.

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User Agency in Digital Media

The ability to influence the content or form of communication through user interaction. This can include features like voting, commenting, or customizing settings.

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Interactive Branching in Digital Media

Interactive branching in digital media allows users to navigate through content in non-linear ways. This creates a dynamic experience where the path is determined by user choices.

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Study Notes

Computer and Digital Basics

  • Information exists digitally, stored, processed, and transmitted through digital tech.
  • Digital systems include consumer goods, communication, and process control.
  • Computers manipulate binary information (0s and 1s).
  • Transistors represent binary states (OFF/ON).
  • Binary numbers represent decimal numbers.
  • Computer components: CPU (central processing unit), memory, and I/O (input/output).
  • CPU functions analogously to the human brain.
  • Computers respond to programmed instructions, unlike independent thought.
  • Digital devices encompass desktops, laptops, phones, and storage devices.
  • Digital devices create, generate, send, share, communicate, receive, store, display, or process information.

LED Televisions

  • LED TVs are digital devices used for visual and data display.
  • They are operated using digital signals.

Electronic Cameras

  • Electronic cameras are more adaptable than conventional cameras.
  • They include digital technology for storage, arrangement, editing, sending, and printing images.
  • Some cameras can record video.

Smartphones

  • Smartphones have transformed communication (both verbal and text-based).
  • They integrate multiple functionalities, like cameras, calculators, and mapping apps.

Alarm Clocks

  • Digital clocks offer advantages over analog clocks concerning ease of use (readable in dark) and precise timing.
  • Digital clocks can be combined with radios.

Printers

  • Printers are digital devices that store information electronically and print it.
  • Devices are becoming more compact, connected, and autonomous.
  • Connectivity improves social connectedness and enables real-time communication.
  • Automation boosts production and allows for increased worker multitasking.
  • Quick data transfer is facilitated by advanced technology (internet).
  • Drawbacks of digital devices include complexity, work overload, information security concerns, addiction, and media manipulation.

Digital Processing

  • Data represents people, events, things, and ideas.
  • Data is usually stored and processed digitally (0s & 1s).
  • Analog data is represented by a continuous range of values.
  • Humans understand data through numerical or symbolic means.
  • Computers must translate data to electrical signals (binary code).

Data Representation

  • Digital data is composed of discrete digits (0s and 1s).
  • Analog data is represented by continuous values.
  • Binary systems comprise 0s and 1s (e.g., numeric data, character data). Various digital codes exist (ASCII, EBCDIC, Unicode).

Digital Media

  • Digital media incorporates print and electronic media.
  • Digital media has transformed communication, production, and distribution processes.
  • Characteristics of digital media: digital, interactive, hypertextual, dispersed, virtual, and telepresent.
  • Effects: cybercrime, security, privacy, surveillance, online hate, and disinformation.

Digital Media Evolution

  • Digital media significantly changed the media industry in the 1990s.
  • Key advancements include the internet, social media, and technological innovations.
  • Digital media has impacted various aspects of society and personal lives.
  • Digital media is continuously evolving and impacting how individuals engage and interact in society.

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Computer and Digital Basics PDF

Description

Test your knowledge on digital technology and its comparison to human cognition. This quiz covers topics such as binary numbers, computer components, and the characteristics of digital devices. Explore how digital systems function and their similarities with human memory.

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