Computer Concepts Intro

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Computer Concepts

Chapter 1

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Overview

Explain Computer Literacy

Define Hardware & Software

Identify Computer Components

Differentiate Various Software Types

Differentiate Computer Platforms

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A World of Computers

Notable Technology Prognostications“I think there is a world market for

maybe five computers.” Thomas Watson, Chairman of IBM, 1943

“Computers in the future may weigh no more than one and a half tons.” Popular Mechanics, 1949

“There is no reason anyone would want a computer in their home.” Ken Olson, President of DEC, 1977

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A World of Computers

Computer UseEverywhere

Impact Virtually Everyone Creation, Collection, Dissemination

Price/Power Competition

Computer Literacy Understanding of Computers and Their Uses

Technical Knowledge Not Required

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What Is A Computer?

Computer DefinitionElectronic Machine

Controlled by Instructions in its Own MemoryAccepts Data

Raw Facts, Figures, & SymbolsProcesses Data Into Information

Data that is Organized, Meaningful, and UsefulProduces & Stores Results

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What Is A Computer?

Information Processing Cycle

Input — Accepts DataProcessing — Manipulate DataOutput — Produce ResultsStorage — Store ResultsCommunication — Send Results to Others

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What Is A Computer?

Hardware & Software

Hardware

Electronic & Mechanical Equipment

Software

Instructions that Tell Hardware How to do Tasks

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Hardware

Common Hardware Components

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Hardware

System Unit

Box-like Device

Contains Electronic Components

Connected to Motherboard

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Hardware

Input DevicesUsed to Enter Data & Instructions

Keyboard Mouse Scanner Digital Camera Video Camera Microphone

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Hardware

Processing

Memory Temporary Storage for Data & Instructions

Central Processing Unit (CPU) Carries Out Instructions Tells Computer What to Do

Attached to Motherboard

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Hardware

Output Devices

Conveys Information to User

Monitor

Printer

Speakers

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Hardware

Storage

Holds Data & Instructions for Future Use Media

Physical Material

Device

Reads / Writes Data

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Hardware

Communications Devices

Establishes Connection Between Computers

Use Telephone Lines, Cables, & Satellites

Modem

Converts Digital Signals to Analog & Vice Versa

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Hardware Networks

Collection of Connected Computers / Devices Share Resources

Hardware Software Data & Information

Save Time & Money Internet

Worldwide Network Linking Millions of Computers

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Software

Systems SoftwareControls Computer Operations & HardwareOperating System

Set of Programs Coordinates Activities Among Hardware Devices Allows Users to Run Application Software

Utility Programs Allow Users to Perform Maintenance-type Tasks

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Software

Application Software

Performs Specific Tasks for Users Word Processing Spreadsheet Database Presentation Personal Information Management (PIM)

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Software

Installation

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Software

Programs

Series of Instructions

Tells Computer What to Do

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Advantages & Disadvantages

Computer Advantages

SpeedReliabilityConsistencyStorageCommunications

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Advantages & Disadvantages

Computer Disadvantages

Violation of PrivacyCrime Impact on Labor ForceHealth Risks Impact on Environment

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Platforms

Personal Computers

Desktops

PCs & Compatibles

Windows OS

Apple

Macintosh OS

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Platforms

Personal Computers

Notebook

AKA Laptop

Tablet

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Platforms

Mobile Computers

PDA

Smart Phone

Handheld

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Platforms

Computer Platforms

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Industry Applications

EducationDistance Learning

FinanceOnline Banking & Investing, Tax Prep

Government911 Dispatching, Squad Notebooks

HealthcareElectronic Patient Records, PPID

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Industry Applications

ScienceCollect, Analyze, & Model Data

PublishingE-books, PDF Manuals, MP3s

TravelNavigation Systems, Reservations, E-

tickets Manufacturing

Production, Inventory, Quality Control