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Subel. E
6 questions
Subelement E

Digital Logic

Section 38

Memory

What is the name of the semiconductor memory IC whose digital data can be written or read, and whose memory word address can be accessed randomly?

  • ROM – Read-Only Memory.
  • PROM – Programmable Read-Only Memory.
  • Correct Answer
    RAM – Random-Access Memory.
  • EPROM – Electrically Programmable Read-Only Memory.

What is the name of the semiconductor memory IC whose digital data can be written or read, and whose memory word address can be accessed randomly?

RAM – Random-Access Memory.

See Wikipedia's articles on:

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What is the name of the semiconductor IC that has a fixed pattern of digital data stored in its memory matrix?

  • RAM – Random-Access Memory.
  • Correct Answer
    ROM – Read-Only Memory.
  • Register.
  • Latch.

What is the name of the semiconductor IC that has a fixed pattern of digital data stored in its memory matrix?

ROM – Read-Only Memory.

From kj6prf:

Because it has a fixed, unchangeable pattern, this memory is read-only memory.

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What does the term “IO” mean within a microprocessor system?

  • Integrated oscillator.
  • Integer operation.
  • Correct Answer
    Input-output.
  • Internal operation.

What does the term “IO” mean within a microprocessor system?

Input-output.

See Wikipedia's article Input/output

For fun demonstration of the IO concept, using a mouse pointer, please see the iohk.io/en/ site, for Input | Output demonstration in color (really great).

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What is the name for a microprocessor’s sequence of commands and instructions?

  • Correct Answer
    Program.
  • Sequence.
  • Data string.
  • Data execution.

What is the name for a microprocessor’s sequence of commands and instructions?

Program.

See Wikipedia's article Computer program

Also, see the Tutorials Point site for the article Computer Programming - Overview

And, see the Southern New Hampshire University site for the article What is Computer Programming and How to Become a Computer Programmer

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How many individual memory cells would be contained in a memory IC that has 4 data bus input/output pins and 4 address pins for connection to the address bus?

  • 8
  • 16
  • 32
  • Correct Answer
    64

How many individual memory cells would be contained in a memory IC that has
4 data bus input/output pins and
4 address pins for connection to the address bus?

64

42=16 * 4 = 64

For more information, please see the Faculty Etsu Edu site for the pdf document called CHAPTER TWELVE Memory Organization

Also, see the Classes Engineering WUSTL Edu site for the pdf presentation Chapter 7- Memory System Design

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What is the name of the random-accessed semiconductor memory IC that must be refreshed periodically to maintain reliable data storage in its memory matrix?

  • ROM – Read-Only Memory.
  • Correct Answer
    DRAM – Dynamic Random-Access Memory.
  • PROM – Programmable Read-Only Memory.
  • PRAM – Programmable Random-Access Memory.

What is the name of the random-accessed semiconductor memory IC that must be refreshed periodically to maintain reliable data storage in its memory matrix?

DRAM – Dynamic Random-Access Memory.

From wp2ahg:

This is not a trick question. "Random Access" is in the question itself. So, this is clearly not either of the ROM (read-only memory) answers.

"Dynamic" (as opposed to 'static') just means it needs to be periodically refreshed.

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