7.3 Memory

• The role of memory in computer systems is to store data and instructions for the CPU
• Computer memory stores data and instructions for the CPU
• Why is primary memory called volatile?

  Data is lost on power off
• Match the memory type with its description:

  RAM ↔️ Volatile memory for active data

  ROM ↔️ Non-volatile memory for firmware
• ROM is used for running applications.

  False
• Secondary memory is volatile.

  False
• Secondary memory retains data when power is turned off.


  True
• What is the main purpose of RAM in a computer system?

  Running applications
• Match the memory type with its characteristic:

  RAM ↔️ Volatile

  ROM ↔️ Non-volatile
• Arrange the memory capacity units from smallest to largest:

  1️⃣ Byte

  2️⃣ Kilobyte

  3️⃣ Megabyte

  4️⃣ Gigabyte
• In a segmented memory model, each memory location is accessed using a single address.

  False
• RAM has a slow access speed compared to secondary memory.

  False
• RAM is called "random access" because any memory location can be accessed in the same amount of time
• Primary memory is also known as RAM
• Primary memory provides fast access to active data and programs
• Arrange the following memory capacity units from smallest to largest:

  1️⃣ Bytes (B)

  2️⃣ Kilobytes (KB)

  3️⃣ Megabytes (MB)

  4️⃣ Gigabytes (GB)
• 1 GB is equal to 1,000,000 KB.


  True
• 1 KB equals 1,000 or 1,024
• RAM and ROM are the only two types of computer memory.

  False
• What is another name for primary memory?

  RAM
• Primary memory provides fast access to active data and programs
• ROM can only be read, not written
• What does computer memory store for the CPU?

  Data and instructions
• What type of storage is non-volatile and provides long-term storage?

  Secondary memory
• What are examples of secondary memory devices?

  HDDs and SSDs
• ROM allows both reading and writing of data.

  False
• What is the smallest unit of computer memory capacity?

  Byte
• How many bytes are in a kilobyte (KB)?

  1,000 or 1,024
• Match the memory organization model with its characteristic:

  Linear Model ↔️ Continuous address range

  Segmented Model ↔️ Divided into segments
• RAM is a volatile type of memory, meaning data is lost when power is turned off.
• RAM is volatile, meaning data is lost when power is turned off.


  True
• Secondary memory is non-volatile, meaning data is retained when power is off.


  True
• What is the purpose of ROM in a computer system?

  Stores permanent instructions
• What does the term "computer memory" refer to?

  Data storage components
• RAM uses random access methods.


  True
• Secondary memory is volatile.

  False
• Primary memory is volatile.


  True
• What happens to data in RAM when power is turned off?

  Data is lost
• Primary memory is also known as RAM
• Primary memory has a very fast access speed.