Introduction to Information Technology: Your Digital World © 2013 The McGraw-Hill Companies, Inc. All rights reserved.Using Information Technology, 10e.

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Presentation transcript:

Introduction to Information Technology: Your Digital World © 2013 The McGraw-Hill Companies, Inc. All rights reserved.Using Information Technology, 10e 1

Introduction to Information Technology: Your Digital World © 2013 The McGraw-Hill Companies, Inc. All rights reserved.Using Information Technology, 10e 1. Purpose of a computer Turn data into information Data: the raw facts and figures Information: data that has been summarized and manipulated for use in decision making 2. Hardware vs. software Hardware = the machinery and equipment in the computer Software (programs) = the electronic instructions that tell the computer how to perform a task 2 (continued)

Introduction to Information Technology: Your Digital World © 2013 The McGraw-Hill Companies, Inc. All rights reserved.Using Information Technology, 10e 3. The basic operations Input: What goes in to the computer system Processing: The manipulation a computer does to transform data into information Storage: Primary storage, or memory, is temporary storage. Secondary storage is permanent storage: media such as DVDs and CDs Output: What comes out Numbers or pictures on the screen, printouts, sounds Communications: Sending and receiving data 3

Introduction to Information Technology: Your Digital World © 2013 The McGraw-Hill Companies, Inc. All rights reserved.Using Information Technology, 10e 4 Panel 1.8 Page 30 Panel 1.8 Page 30

Introduction to Information Technology: Your Digital World © 2013 The McGraw-Hill Companies, Inc. All rights reserved.Using Information Technology, 10e What would you need? Keyboard & mouse (input) Inside the system cabinet (processing & memory ) Case and power supply Processor chip – the Central Processor Unit (CPU) Memory chips – Random Access Memory (RAM) Motherboard – the system board Memory chips plug in Processor chip plugs in Motherboard attaches to system cabinet Power supply is connected to system cabinet Power supply wire is connected to motherboard 5

Introduction to Information Technology: Your Digital World © 2013 The McGraw-Hill Companies, Inc. All rights reserved.Using Information Technology, 10e Storage Hardware: Hard Drive, CD/DVD Drive, Flash Storage capacity is represented in bytes 1 byte = 1 character of data 1 kilobyte = 1,024 bytes 1 megabyte = 1,024 kilobytes 1 gigabyte = 1,024 megabytes 1 terabyte = 1,024 gigabytes 1 petabyte = 1,024 terabytes Permanently installed: hard drives, CD/DVD drives, slot connectors for USB and flash memory Removable media: CDs/DVDs, USB and flash memory 6