Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Chapter 01: Information Technology, the Internet, and You
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-2 McGraw-Hill Five Parts of an Information System 1.People 2.Procedures 3.Software 4.Hardware 5.Data
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-3 McGraw-Hill People Most important part of any systemMost important part of any system Contact is …Contact is … –Direct –Indirect Computer usesComputer uses –Business & Entertainment –Education & Medicine
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-4 McGraw-Hill Software Software is another name for programsSoftware is another name for programs Two major kinds of softwareTwo major kinds of software –System Software System SoftwareSystem Software –Application Software Application SoftwareApplication Software
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-5 McGraw-Hill System Software A collection of programs – not a single programA collection of programs – not a single program –Includes Operating System software, Utilities, and Device Drivers Enables the application software to interact with the hardware, and helps the computer manage its resourcesEnables the application software to interact with the hardware, and helps the computer manage its resources Two best-known operating systems for microcomputers are Windows 7 and Mac OS XTwo best-known operating systems for microcomputers are Windows 7 and Mac OS X Return
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-6 McGraw-Hill Application Software End-user softwareEnd-user software Two major categoriesTwo major categories –Basic applications –Specialized applications Return
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-7 McGraw-Hill Hardware - Types of Computers SupercomputersSupercomputers Mainframe computersMainframe computers Minicomputers (or mid-range computers)Minicomputers (or mid-range computers) MicrocomputersMicrocomputersMicrocomputers
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-8 McGraw-Hill Microcomputer Types DesktopDesktopDesktop Media center system unitsMedia center system unitsMedia center system unitsMedia center system units Notebook or laptopNotebook or laptopNotebook or laptopNotebook or laptop NetbooksNetbooksNetbooks Tablet PCTablet PCTablet PCTablet PC HandheldHandheldHandheld
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-9 McGraw-Hill Desktop Computers Desktop computers are small enough to fit on top of or alongside a desk, yet are too big to carry aroundDesktop computers are small enough to fit on top of or alongside a desk, yet are too big to carry around Return
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-10 McGraw-Hill Media Center System Units Media center system units blur the line between desktop computers and dedicated entertainment devicesMedia center system units blur the line between desktop computers and dedicated entertainment devices Return
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-11 McGraw-Hill Notebook or Laptop Computers Return Notebook computers, also known as laptop computers, are portable, lightweight, and fit into most briefcasesNotebook computers, also known as laptop computers, are portable, lightweight, and fit into most briefcases
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-12 McGraw-Hill Netbooks Similar to notebook computers, but …Similar to notebook computers, but … –Smaller –Lighter –Less expensive Return
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-13 McGraw-Hill Tablet PC In addition to a keyboard, a tablet PC allows you to enter data, write notes, and select commands using a pen stylusIn addition to a keyboard, a tablet PC allows you to enter data, write notes, and select commands using a pen stylus Handwritten data is digitized and converted to standard text that can be further processed by a word processorHandwritten data is digitized and converted to standard text that can be further processed by a word processor Return
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-14 McGraw-Hill Handheld Handheld or palm computers, such as Personal digital assistants (PDAs) and smartphones, are amongst the smallest computing devicesHandheld or palm computers, such as Personal digital assistants (PDAs) and smartphones, are amongst the smallest computing devices These systems typically combine pen input, writing recognition, personal organizational tools, and communications capabilitiesThese systems typically combine pen input, writing recognition, personal organizational tools, and communications capabilities Smartphones are cell phones with wireless connections to the InternetSmartphones are cell phones with wireless connections to the Internet Return
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-15 McGraw-Hill Microcomputer Hardware Four basic categories of equipment:Four basic categories of equipment: –System Unit System UnitSystem Unit –Input/Output Input/Output –Secondary Storage Secondary StorageSecondary Storage –Communications Communications
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-16 McGraw-Hill Mini Computers A mini computer is between the range of a mainframe and a microcomputer. Uses: Industries, Factories 10 SQ Feet area 10 Terminal connected to CPU Eg: Prime 997
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-17 McGraw-Hill MainFrame Computers Largest computers on the basis of size approximately 1000 sq. feet area and the most expensive system 100 Terminals+CPU Govenments Eg:IBM1401
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-18 McGraw-Hill Super Computers These computers are the fastest, most expensive Used by countries Complex mathematical calculations GPS 1 floor Eg: Param
Copyright © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 1-19 McGraw-Hill System Unit Two important componentsTwo important components –Microprocessor –Memory Return