Ch01 - An Introduction to Hardware Software and the...

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Unformatted text preview: An Introduction to Hardware, Software, and the Internet Java Methods Java Methods A & AB A & AB Object-Oriented Programming and Data Structures Maria Litvin ● Gary Litvin Copyright © 2006 by Maria Litvin, Gary Litvin, and Skylight Publishing. All rights reserved . ch 001 1-2 Objectives: • Get an overview of the main hardware components and terms: CPU, memory, peripheral devices • Learn about software: operating system and application software • Get an idea of how information is stored in computer memory • Learn basic facts about the Internet 1-3 The text for this chapter is on the web at: www.skylit.com/javamethods 1-4 Hardware • The CPU (C entral P rocessing U nit) is made of millions of semiconductor devices, called transistors, etched into a silicon chip. • Transistors are combined to form logical devices called gates. • All digital electronics is basically made up of gates. 1-5 A B A AND B A OR B A B A NOT A A B A AND B T T T T F F F T F F F F A B A OR B T T T T F T F T T F F F A NOT A T F F T Gates AND gate OR gate NOT gate 1-6 Example: XOR Circuit A B A XOR B A B A XOR B T T F T F T F T T F F F A AND (NOT B) OR (NOT A) AND B 1-7 RAM, CPU, Bus CPU Memory (RAM) Data bus Address bus Registers Memory (ROM) 1-8 CPU RAM (SIMMs) Extension slots ROM Motherboard 1-9 Hardware Terms • CPU — C entral P rocessing U nit • RAM — R andom-A ccess M emory “random-access” means the CPU can read directly from and write to any memory location holds both data and CPU instructions • ROM — R ead-O nly M emory holds initialization and hardware diagnostic programs • Peripheral devices (secondary storage, input/ output) 1-10...
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This note was uploaded on 10/29/2008 for the course CPO 2001 taught by Professor Kraus during the Spring '08 term at University of Florida.

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Ch01 - An Introduction to Hardware Software and the...

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