Computer Number Systems and ASCII Code
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Questions and Answers

What frequency range does Wi-Fi typically operate within?

  • 1 to 2 GHz
  • 2.5 to 5 GHz (correct)
  • 2 to 4 GHz
  • 5 to 10 GHz

    • What is the term used for the connection established between two Bluetooth devices?

  • Syncing
  • Pairing (correct)
  • Linking
  • Connecting

    • Which of the following programming languages is considered object-oriented?

  • C
  • Pascal
  • C# (correct)
  • Python

    • Which type of software is responsible for managing computer hardware and software resources?

    <p>System software</p> Signup and view all the answers

    Which of the following is NOT classified as application software?

    <p>Windows 10</p> Signup and view all the answers

    Which organization is responsible for setting the standards for Wi-Fi and Bluetooth technologies?

    <p>IEEE</p> Signup and view all the answers

    What type of software includes programs designed for specific tasks like document editing and web browsing?

    <p>Application software</p> Signup and view all the answers

    Which system software is widely used on personal computers today?

    <p>Microsoft Windows</p> Signup and view all the answers

    What does the ASCII code primarily represent?

    <p>Letters, numbers, and basic special characters</p> Signup and view all the answers

    What is the role of the address bus in a computer system?

    <p>To specify a physical address for instructions and devices</p> Signup and view all the answers

    Which of the following best describes a data bus?

    <p>It transfers data to and from the CPU's memory</p> Signup and view all the answers

    What does the binary number system primarily consist of?

    <p>Digits 0 and 1</p> Signup and view all the answers

    Which code is predominantly used by computer systems to convert characters into binary?

    <p>ASCII</p> Signup and view all the answers

    How do computers primarily connect to one another in a network?

    <p>Via network interconnections</p> Signup and view all the answers

    What is the main function of the control bus in computer communications?

    <p>To communicate between the CPU and peripheral devices</p> Signup and view all the answers

    Which of the following best describes the hexadecimal number system?

    <p>It uses 16 digits.</p> Signup and view all the answers

    In ASCII, how is the character ‘A’ represented in binary?

    <p>0100 0001</p> Signup and view all the answers

    What are the basic parts of a computer?

    <p>CPU, memory, keyboard, and screen.</p> Signup and view all the answers

    What does the term 'octal' mean in the context of number systems?

    <p>Using 8 digits</p> Signup and view all the answers

    Which of the following is NOT a type of bus in a computer system?

    <p>Instruction bus</p> Signup and view all the answers

    What is programming primarily defined as?

    <p>Creating structured and logical operations for computers</p> Signup and view all the answers

    What does the prefix 'bi' in 'binary' indicate?

    <p>Two</p> Signup and view all the answers

    Which statement describes how a computer interprets input from a keyboard?

    <p>It converts keystrokes to binary using pressure pads.</p> Signup and view all the answers

    Which of the following correctly separates system software from application software?

    <p>System software includes operating systems.</p> Signup and view all the answers

    Which mobile operating system acquired 85% of the global market as of 2016?

    <p>Android OS</p> Signup and view all the answers

    What is the newest teaching methodology mentioned that allows communication through online discussion?

    <p>E-learning</p> Signup and view all the answers

    Which of the following is not included as part of electronic banking services?

    <p>Credit card application</p> Signup and view all the answers

    How has information and communication technology (ICT) impacted the workforce industry?

    <p>By expediting production planning and control systems</p> Signup and view all the answers

    What benefit does e-commerce provide according to the content?

    <p>It boosts the economy</p> Signup and view all the answers

    What advantage do computers offer in hospitals?

    <p>They create a patient’s database</p> Signup and view all the answers

    Which of the following is considered a threat to assembly-line and factory workers due to ICT?

    <p>Robots and automation</p> Signup and view all the answers

    Which of the following benefits is not associated with using computers in education?

    <p>Higher textbook costs</p> Signup and view all the answers

    What was the original purpose of ARPANET when it was established in the 1960s?

    <p>To allow military collaboration with businesses and government laboratories</p> Signup and view all the answers

    Which of the following is not a function of the internet?

    <p>Storing data permanently</p> Signup and view all the answers

    How many people were reported to connect to the internet globally in 2018?

    <p>4 billion</p> Signup and view all the answers

    What is the primary job of the internet?

    <p>To transfer computerized information</p> Signup and view all the answers

    Which company is noted as the largest network provider mentioned in the content?

    <p>PLDT</p> Signup and view all the answers

    What is Internet2 primarily focused on?

    <p>Educational and research collaboration</p> Signup and view all the answers

    What technological advancement is referred to as WWW?

    <p>Hypertext-based technology</p> Signup and view all the answers

    Which of the following best defines the internet?

    <p>A worldwide network connecting several computers</p> Signup and view all the answers

    Study Notes

    Computer Number Systems

    • Humans use the decimal number system for counting and computing.
    • Computers use the binary number system, with digits 0 and 1.
    • Octal number system uses 8 digits.
    • Hexadecimal number system uses 16 digits.

    ASCII Code

    • Computer systems convert characters from the keyboard into binary code using ASCII (American Standard Code for Information Interchange).
    • ASCII is a 7-bit code representing letters, numbers, and special characters.
    • Uppercase 'A' is represented as 0100 0001 in binary, 101 in octal, or 41 in hexadecimal.

    System Bus

    • A computer system communicates through a system bus, which is a pathway of cables and connectors.
    • The system bus carries data between peripheral devices (monitor, keyboard, mouse) and the CPU and main memory.
    • Three types of buses: data bus, address bus, and control bus.

    Data Bus

    • Carries data to and from the computer's memory and the CPU.
    • Examples of data transferred include files from a flash drive and documents sent to the printer.

    Address Bus

    • Used by the CPU to locate instructions, files, and devices within the computer system.
    • For example, the address bus checks which USB port a printer, mouse, or keyboard is connected to.

    Control Bus

    • Carries command instructions from the CPU to other devices.
    • Also sends status signals from devices indicating if they are ready or not.

    Wired and Wireless Connections

    • Computers communicate over networks, which connect two or more computers.
    • This allows sharing of information and resources.

    Wi-Fi

    • Uses radio waves for wireless transmitting information within a network.
    • Operates in frequencies between 2.5 and 5 gigahertz (GHz).

    Bluetooth

    • Uses lower power radio waves to connect devices.
    • Paired devices can send and receive information within a specified range.

    Computer Software

    • Software is a combination of instructions, data, and programs that a computer uses for specific tasks.
    • Programs are sets of instructions written by programmers using programming languages.
    • The most common programming language is object-oriented programming, which includes C#, Java, and PHP.

    System Software and Application Software

    • System software (operating system) manages the computer's hardware and provides a platform for applications to run on.
    • Application software refers to programs that are used for specific tasks, such as Microsoft Word, Adobe Photoshop, and Google Chrome.

    Common Operating Systems (OS)

    • Microsoft Windows and Apple's macOS are popular desktop operating systems.
    • Android OS is the most popular mobile operating system.

    Impact of Computers on Daily Life

    • The development of ICT has greatly impacted many areas of life.
    • Computers are used in schools, hospitals, malls, and various industries.

    Education

    • ICT makes learning convenient and efficient for teachers, students, and administrators.
    • E-learning allows students and teachers to communicate and collaborate online.

    Banking

    • Computers have improved banking by offering secure and convenient transactions.
    • Services include ATM, cheque deposit, electronic fund transfer, direct deposit, and pay-by-phone systems.

    Workforce Industry

    • ICT benefits workers, researchers, and administrators in various industries.
    • It streamlines production, supports chain management, facilitates product design, and operates automated machines.
    • However, it can also lead to job displacement as robots take over certain tasks.

    E-Commerce

    • E-commerce has boosted the economy by facilitating easier, faster, and more efficient buying and selling activities.
    • Customers, sellers, and suppliers all benefit from this technology.

    Hospitals

    • Computers in hospitals offer benefits to both doctors and patients.
    • They are used for creating patient databases, monitoring vital signs, and performing tests such as blood tests, ultrasounds, and X-rays.

    The Internet

    • The Internet is a global network connecting millions of computers.
    • Telephone companies act as Internet Service Providers (ISPs).
    • There are over 4 billion internet users worldwide.

    Internet History

    • The Internet originated from ARPANET (Advanced Research Projects Agency Network), established by the U.S. Department of Defense in the 1960s.
    • The development of hypertext-based technology, known as the World Wide Web (WWW), enabled the display of text, graphics, and other media online.

    Internet2

    • A non-profit consortium founded in 1996 by 34 universities in the U.S.
    • Facilitates collaboration and research in advanced technologies, including telemedicine, digital libraries, and virtual laboratories.

    Internet's Purpose

    • The internet's primary function is to transfer computerized information (data) from one location to another.
    • It facilitates various tasks, including email communication, website searching, and file sharing.

    Future Empowerment

    • The internet continues to evolve and impact various aspects of life.
    • It remains a powerful tool for communication, access to information, and technological advancement.

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    Description

    This quiz covers the fundamental concepts of computer number systems such as binary, octal, and hexadecimal, as well as the ASCII code used for character representation. Additionally, it explores the architecture of data communication within a computer through the system bus and its components. Test your knowledge on how information is processed in the digital realm!

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