Introduction To Computing Systems
3rd Edition
ISBN: 9781260150537
Author: PATT, Yale N., Patel, Sanjay J.
Publisher: Mcgraw-hill,
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Question
Chapter 4, Problem 1E
Program Plan Intro
Von Neumann model
- A Von Neumann model or architecture is any stored
program computer in which an instruction fetch and a data operation cannot occur at the same time as they share a common bus. - It is a stored program digital computer that keeps both program instructions and data in read-write and in Random Access Memory (RAM).
- It is a stored program system that has one dedicated set of address and data buses for reading and writing to memory and another set of address and data buses for fetching instructions.
Expert Solution & Answer
Explanation of Solution
Components of Von Neumann model
The five main components of Von Neumann model include:
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.
Input
- Input means providing or giving something to the computer.
- When a computer or device is receiving a command or signal from other sources, then it is known as input to the device.
- Input is something that is entered into a machine or other system or it is the act of entering data or other information.
Output
- It is a piece of computer hardware component that converts information into human readable form.
- It is any device that is used to send data from one computer to another device or user.
- Hence it is defined as the act of producing something.
Control Unit
- The control unit determines the order in which instructions should be executed and controls the retrieval of the operands.
- It is the unit where instructions of the machine are interpreted.
- The execution of each instruction is determined by a sequence of control signals that are produced by a control unit.
- It makes sure that all other parts perform tasks correctly and at the correct time.
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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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