40 Questions
What happens to the contents of volatile memory when power is turned off?
It is lost
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.
memory module
What is the primary function of a USB adapter?
To enhance the functions of a mobile computer and provide connections to peripheral devices
A bus is a physical connector that allows devices to communicate with each other.
False
What does memory cache do to speed up the computer?
Stores frequently used instructions and data
Match the following types of RAM with their descriptions:
Dynamic RAM = DRAM Static RAM = SRAM
What is the term for the number of bits the processor can interpret and execute at a given time?
Word size
SRAM is a type of dynamic RAM.
False
A computer might have three types of buses, including the _______________________ bus.
System
What is the main difference between volatile and nonvolatile memory?
Whether it loses its contents when power is turned off
Match the following bus types with their descriptions:
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
What is the purpose of the Address bus?
To identify the location of devices in the system
A USB adapter is a type of bus.
False
What are the three components of a bus?
Data bus, Address bus, and Control bus
What does a byte typically represent in a computer or mobile device?
A single character
Memory size is commonly measured in megabytes (MB).
False
What are the three basic categories of items stored in memory?
The operating system and other programs, applications, and data being processed and the resulting information
Each location in memory has an ___________________________.
address
Match the following memory-related terms with their descriptions:
Byte = Basic unit of information in computing Gigabyte (GB) = Unit of measurement for memory size Memory address = Unique identifier for each location in memory
What is stored in memory?
Instructions, data, and results of processing
Memory consists of non-electronic components.
False
What is the purpose of memory in a computer or mobile device?
To store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data
What is the primary function of the case in a computer?
To protect the electronics from damage
A computer chip contains mechanical circuits.
False
What is the main circuit board of the computer?
The motherboard
The motherboard is the main _______________________ board of the computer.
circuit
Match the following components with their functions:
Case = Protects the electronics from damage Power Supply = Provides power to the computer Motherboard = Stores data Batteries = Provides power to mobile devices
What is the purpose of USB adapters?
To connect devices to the computer
The case is responsible for storing data in the computer.
False
What do batteries provide power to?
Mobile devices
What is the primary function of a power supply or laptop AC adapter?
To convert AC power into DC power
Batteries are typically non-rechargeable in mobile devices
False
What are the two ways mobile computers and devices can run?
Using a power supply or batteries
Mobile devices typically use _______________ batteries
rechargeable lithium-ion
What is the purpose of a power supply or battery in a computer?
To provide power to the computer
A computer can only run using a power supply
False
Match the following components with their functions
Power Supply = Converts AC power into DC power Battery = Provides power to the computer Processor = Executes instructions Adapter = Connects devices to the computer
What is the purpose of a power supply or laptop AC adapter?
To convert the wall outlet AC power into DC power
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.
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.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
