How does Computer Memory Work?
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Questions and Answers

Which type of memory is used for long-term storage in a computer?

  • Dynamic Random-Access Memory (DRAM)
  • Central Processing Unit (CPU)
  • Working Memory
  • Solid-State Drive (SSD) (correct)

What is the main function of DRAM in a computer?

  • To display the loading bar
  • To move data from SSD to DRAM
  • To temporarily store data for the CPU to work with (correct)
  • To permanently store data

Which memory type is faster: DRAM or SSD?

  • SSD
  • It depends on the size of the memory cells
  • DRAM (correct)
  • They have the same speed

Which part of the memory channel carries an address specifying where to read or write data?

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

How many bits are used to select the bank group in the memory chip?

<p>3 bits (A)</p> Signup and view all the answers

How many memory cells are there in each bank of the DRAM microchip?

<p>65536 cells (D)</p> Signup and view all the answers

What is the process of moving data before it's needed called?

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

How many nanoseconds does it take for electricity to travel across a room?

<p>17 nanoseconds (A)</p> Signup and view all the answers

What is the purpose of precharging the bitlines?

<p>To open a row (D)</p> Signup and view all the answers

Which part of the address is called RAS?

<p>Row address (A)</p> Signup and view all the answers

Which part of the 1T1C memory cell stores one bit of data?

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

Why are banks significantly taller than they are wide?

<p>To increase the efficiency of reading and writing (A)</p> Signup and view all the answers

What is the voltage applied and stored in each capacitor for a binary 1 during writing or refreshing in DDR5?

<p>1.4 volts (D)</p> Signup and view all the answers

How long does it take to refresh all the rows in a bank of DRAM?

<p>3 milliseconds (D)</p> Signup and view all the answers

What does the first number in the timing parameters on a package of DRAM refer to?

<p>The time it takes between sending an address with a row open to receiving the data stored in those columns (D)</p> Signup and view all the answers

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