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Brrunno [24]
2 years ago
9

Identify two entities and 2 of their attributes from the given scenario.

Computers and Technology
1 answer:
polet [3.4K]2 years ago
8 0

Bookstore and BookSearch are the two entities for the given scenario.

Explanation:

  • For the given Book.com virtual store, there can be two entities like Bookstore and BookSearch.
  • Bookstore can have all the details of the books in the virtual store. hence the attributes can be
  • Bookstore attributes: bookname, Authorname, Publisher, Publishedyear, Agegroup, category.
  • BookSearch entity can be used to search the books in the virtual store.
  • Booksearch attributes: bookname, category, bookid, authorname.
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Which of the following is an advantage of inserting a page number field in your document rather than inserting each page number
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The advantage of inserting the page number field is that the page number field could show the current page number.

The following information should be relevant with respect to the page number:

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  • The page number field & the actual page number could be easily inserted into the document.

Therefore we can conclude that the advantage of inserting the page number field is that the page number field could show the current page number.

Learn more about the page number here: brainly.com/question/3063419

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If there are 8 opcodes and 10 registers, a. What is the minimum number of bits required to represent the OPCODE? b. What is the
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Answer:  

For 32 bits Instruction Format:

OPCODE   DR               SR1                   SR2      Unused bits

a) Minimum number of bits required to represent the OPCODE = 3 bits

There are 8 opcodes. Patterns required for these opcodes must be unique. For this purpose, take log base 2 of 8 and then ceil the result.

Ceil (log2 (8)) = 3

b) Minimum number of bits For Destination Register(DR) = 4 bits

There are 10 registers. For unique register values take log base 2 of 10 and then ceil the value.  4 bits are required for each register. Hence, DR, SR1 and SR2 all require 12 bits in all.  

Ceil (log2 (10)) = 4

c) Maximum number of UNUSED bits in Instruction encoding = 17 bits

Total number of bits used = bits used for registers + bits used for OPCODE  

     = 12 + 3 = 15  

Total  number of bits for instruction format = 32  

Maximum  No. of Unused bits = 32 – 15 = 17 bits  

OPCODE                DR              SR1             SR2              Unused bits

  3 bits              4 bits          4 bits           4 bits                17 bits

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