Chapter 2 - Technology essentials. After studying this chapter you will be able to understand: The components of IT, the internet, the world wide web, internet security, meaningful applications of technology. | Chapter 2 Technology Essentials 2- © John Wiley & Sons Canada, Ltd. WHAT WE WILL COVER • The Components of IT • The Internet • The World Wide Web • Internet Security • Meaningful Applications of Technology 2- © John Wiley & Sons Canada, Ltd. THE COMPONENTS OF IT All IT, including computers, mobile phones, and PDAs, are actually limited to the following capabilities: accepting and storing information performing mathematical calculations applying logic to make decisions retrieving, displaying, and sending information consistently repeating the above actions many times 2- © John Wiley & Sons Canada, Ltd. IT CATEGORIES Hardware the electronic and mechanical components that you can see and touch Software the set of instructions that direct the hardware Networks technology that allows users to share resources (hardware, software, & information) 2- © John Wiley & Sons Canada, Ltd. THE THREE BASIC CATEGORIES TOGETHER MAKE UP WHAT IS KNOWN AS A PLATFORM 2- © John Wiley & Sons Canada, Ltd. ALL IT DEVICES SHARE A COMMON SET OF SIX SYSTEM COMPONENTS 2- © John Wiley & Sons Canada, Ltd. Computer Type Relative Processing Power Purpose Supercomputer Largest and fastest Performs processor intensive computations using parallel processing. Mainframe Large Carries out many of the organizational processing needs using high-speed processing chips and large amounts of memory. Server farms Medium/many Allows multiple servers to handle network processing activities. Personal computer (PC) Small to medium Enables users to carry out processing tasks needed to perform their job; usually networked together. Personal digital assistant (PDA)/Tablets/Smart phones Very small Provides users with portable computing power; often using specially designed applications, and enable the ability to connect to the Internet and e-mail Embedded processors Extremely small Provides low-scale processing and/or identification; embedded in appliances and products. COMPUTER HIERARCHY . | Chapter 2 Technology Essentials 2- © John Wiley & Sons Canada, Ltd. WHAT WE WILL COVER • The Components of IT • The Internet • The World Wide Web • Internet Security • Meaningful Applications of Technology 2- © John Wiley & Sons Canada, Ltd. THE COMPONENTS OF IT All IT, including computers, mobile phones, and PDAs, are actually limited to the following capabilities: accepting and storing information performing mathematical calculations applying logic to make decisions retrieving, displaying, and sending information consistently repeating the above actions many times 2- © John Wiley & Sons Canada, Ltd. IT CATEGORIES Hardware the electronic and mechanical components that you can see and touch Software the set of instructions that direct the hardware Networks technology that allows users to share resources (hardware, software, & information) 2- © John Wiley & Sons Canada, Ltd. THE THREE BASIC CATEGORIES TOGETHER MAKE UP WHAT IS KNOWN AS A PLATFORM 2- © John Wiley
