Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Concept explainers

Fundamentals of hardware concepts
A computer system is made of a combination of hardware and software. The software consists of a set of instructions that instruct the computer to perform a task. It can be system software or application software. Whereas, hardware is the part of a comput…
Question
  1. A digital computer has a memory unit with 32 bits per word.  The instruction set consists of 127 different operations.  All instructions have an operation code part (opcode), and an address part (allowing for only one address).  Each instruction is stored in one word of memory.

 

  1. How many bits are needed for the opcode? ________

 

  1. How many bits are left for the address part of the instruction? _______

 

  1. What is the maximum allowable size for memory? _________
  2.  
Expert Solution
Check Mark
Step 1

1)7 bits, because 2^7-1 = 127 possible opcodes.

2) 25 bits, because 32 - 7 = 25.

 

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