Introduction To Computing Systems
3rd Edition
ISBN: 9781260150537
Author: PATT, Yale N., Patel, Sanjay J.
Publisher: Mcgraw-hill,
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Chapter 4, Problem 2E
Program Plan Intro
Memory
- The computer memory is used for storing program instructions and data.
- The two main commonly used types of memories are Random Access Memory (RAM) and Read Only Memory (ROM).
- RAM stores data and the general purpose programs that are executed by the machine.
- It is temporary and the contents can be changed at any time and the contents can be erased when the power is turned off.
- ROM on the other hand is permanent and is used for storing initial boot up instructions of the machine.
Processing unit
- The Central Processing Unit (CPU) is considered as the heart of the computing system.
- It includes three main components that is the Control Unit (CU), one or more Arithmetic Logic Units (ALUs) and various registers.
- A CPU that is implemented on a single chip is known as microprocessor.
- Hence a processing unit is mainly used for computation and processing of information.
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Consider the following database for some store:
Customers (cid, cname, city, discount)Agents (aid, aname, city, percent)Products (pid, pname, city, quantity, price)Orders (ordno, mon, cid, aid, pid, qty, dollars)
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The relation Agents records the ID (aid), name (aname), location (city) of each agent and a transaction fee (percent) charged by this agent.
The relation Products lists the ID (pid), name (pname), location (city), quantity and price of available products.
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Consider the following relational schema and briefly answer the questions that follow:
Emp(eid: integer, ename: string, age: integer, salary: real)
Works(eid: integer, did: integer, pct_time: integer)
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Consider the following relations:
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Chapter 4 Solutions
Introduction To Computing Systems
Ch. 4 - Prob. 1ECh. 4 - Prob. 2ECh. 4 - What is misleading about the name program counter?...Ch. 4 - Prob. 4ECh. 4 - Prob. 5ECh. 4 - What are the two components of an instruction?...Ch. 4 - Prob. 7ECh. 4 - The FETCH phase of the instruction cycle does two...Ch. 4 - Prob. 10ECh. 4 - State the phases of the instruction cycle, and...
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