Computer Hardware Overview
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Questions and Answers

What happens to the contents of volatile memory when power is turned off?

  • It is saved
  • It is lost (correct)
  • It is deleted
  • It remains the same

    • Nonvolatile memory loses its contents when power is removed.

    False

    What is an example of a type of nonvolatile memory?

    ROM

    RAM chips usually reside on a _______________________ and are inserted into memory slots.

    <p>memory module</p> Signup and view all the answers

    What is the primary function of a USB adapter?

    <p>To enhance the functions of a mobile computer and provide connections to peripheral devices</p> Signup and view all the answers

    A bus is a physical connector that allows devices to communicate with each other.

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

    What does memory cache do to speed up the computer?

    <p>Stores frequently used instructions and data</p> Signup and view all the answers

    Match the following types of RAM with their descriptions:

    <p>Dynamic RAM = DRAM Static RAM = SRAM</p> Signup and view all the answers

    What is the term for the number of bits the processor can interpret and execute at a given time?

    <p>Word size</p> Signup and view all the answers

    SRAM is a type of dynamic RAM.

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

    A computer might have three types of buses, including the _______________________ bus.

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

    What is the main difference between volatile and nonvolatile memory?

    <p>Whether it loses its contents when power is turned off</p> Signup and view all the answers

    Match the following bus types with their descriptions:

    <p>System bus = Allows devices inside the system unit to communicate Backside bus = Allows devices attached to the system unit to communicate Expansion bus = Allows devices to be added to the system unit</p> Signup and view all the answers

    What is the purpose of the Address bus?

    <p>To identify the location of devices in the system</p> Signup and view all the answers

    A USB adapter is a type of bus.

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

    What are the three components of a bus?

    <p>Data bus, Address bus, and Control bus</p> Signup and view all the answers

    What does a byte typically represent in a computer or mobile device?

    <p>A single character</p> Signup and view all the answers

    Memory size is commonly measured in megabytes (MB).

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

    What are the three basic categories of items stored in memory?

    <p>The operating system and other programs, applications, and data being processed and the resulting information</p> Signup and view all the answers

    Each location in memory has an ___________________________.

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

    Match the following memory-related terms with their descriptions:

    <p>Byte = Basic unit of information in computing Gigabyte (GB) = Unit of measurement for memory size Memory address = Unique identifier for each location in memory</p> Signup and view all the answers

    What is stored in memory?

    <p>Instructions, data, and results of processing</p> Signup and view all the answers

    Memory consists of non-electronic components.

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

    What is the purpose of memory in a computer or mobile device?

    <p>To store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data</p> Signup and view all the answers

    What is the primary function of the case in a computer?

    <p>To protect the electronics from damage</p> Signup and view all the answers

    A computer chip contains mechanical circuits.

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

    What is the main circuit board of the computer?

    <p>The motherboard</p> Signup and view all the answers

    The motherboard is the main _______________________ board of the computer.

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

    Match the following components with their functions:

    <p>Case = Protects the electronics from damage Power Supply = Provides power to the computer Motherboard = Stores data Batteries = Provides power to mobile devices</p> Signup and view all the answers

    What is the purpose of USB adapters?

    <p>To connect devices to the computer</p> Signup and view all the answers

    The case is responsible for storing data in the computer.

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

    What do batteries provide power to?

    <p>Mobile devices</p> Signup and view all the answers

    What is the primary function of a power supply or laptop AC adapter?

    <p>To convert AC power into DC power</p> Signup and view all the answers

    Batteries are typically non-rechargeable in mobile devices

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

    What are the two ways mobile computers and devices can run?

    <p>Using a power supply or batteries</p> Signup and view all the answers

    Mobile devices typically use _______________ batteries

    <p>rechargeable lithium-ion</p> Signup and view all the answers

    What is the purpose of a power supply or battery in a computer?

    <p>To provide power to the computer</p> Signup and view all the answers

    A computer can only run using a power supply

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

    Match the following components with their functions

    <p>Power Supply = Converts AC power into DC power Battery = Provides power to the computer Processor = Executes instructions Adapter = Connects devices to the computer</p> Signup and view all the answers

    What is the purpose of a power supply or laptop AC adapter?

    <p>To convert the wall outlet AC power into DC power</p> Signup and view all the answers

    Study Notes

    Inside the Case

    • The case contains and protects the electronics of the computer or mobile device from damage.
    • The motherboard is the main circuit board of the computer.

    The Motherboard

    • A computer chip contains integrated circuits.
    • A byte represents a single character in the computer or mobile device.

    Data Representation

    • Data is represented electronically by the presence or absence of an electronic charge.

    Memory

    • Memory consists of electronic components that store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data.
    • Memory stores three basic categories of items: the operating system and other programs, applications, and data being processed and the resulting information.
    • Each location in memory has an address.
    • Memory size is commonly measured in gigabytes (GB) or terabytes (TB).
    • Computers and mobile devices contain two types of memory: volatile memory (loses its contents when power is turned off) and nonvolatile memory (does not lose contents when power is removed).
    • Examples of volatile memory include RAM. Examples of nonvolatile memory include ROM, flash memory, and CMOS.
    • Two common types of RAM exist: Dynamic RAM (DRAM) and Static RAM (SRAM).
    • RAM chips usually reside on a memory module and are inserted into memory slots.
    • Memory cache speeds the processes of the computer because it stores frequently used instructions and data.

    Adapters

    • A USB adapter enhances functions of a mobile computer and/or provides connections to peripheral devices.

    Buses

    • A bus allows the various devices both inside and attached to the system unit to communicate with one another.
    • There are three types of buses: data bus, address bus, and control bus.
    • Word size is the number of bits the processor can interpret and execute at a given time.
    • A computer might have three types of buses: system bus, backside bus, and expansion bus.

    Power Supply and Batteries

    • The power supply or laptop AC adapter converts the wall outlet AC power into DC power.
    • Mobile computers and devices can run using either a power supply or batteries.
    • Batteries typically are rechargeable lithium-ion batteries.

    Caring for Computers and Mobile Devices

    • Computers and mobile devices require care to maintain their performance and longevity.

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    Related Documents

    Chapter 6,FO.pdf

    Description

    Learn about the different types of memory, adapter cards, and USB adapters. Understand the purpose of each and how they function in a computer system.

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