ITK 150

1
ITK 150

• Computing Concepts

2
Your computer

• Combination of software and hardware
• Software - programs
• Examples
• Hardware physical parts that make up the
  computer
• Examples

3
Software

• A set of instructions that your computer hardware
  (processor) executes to do something for you.

4
Software

• Two categories
• Systems software
• Application software

5
Application software

• Personal productivity software lets you
  perform tasks (some of which you could perform
  without a computer)
• Software suites bundles of related software
• Examples
• Office
• Word Perfect Office 11
• Adobe Web Premium CS3

6
Basic Personal Productivity Suites

• General include
• Word processor
• Spreadsheet
• Presentation software
• Database
• Maybe
• Email software
• PIM (Personal information management)
• Calendar
• Address book

7
Why buy a software suite?

• Cheaper!!!
• Users become comfortable using the same
  interface.
• Icons are the same
• Layout is the same
• Toolbars are similar
• Etc.

8
Additions to productivity suites

• Desktop publishing software
• Web authoring software
• Graphics software
• Financial software
• Database may be an add on

9
System software

• Operating System systems software that manages
  the system hardware and application software
• Windows XP
• Windows Vista
• Windows NT
• Mac OSX
• Utility software
• Norton anti-virus software

10
Hardware

• Categories
• Processor (CPU)
• Memory (RAM)
• Peripheral Devices
• Input Devices
• Examples?
• Output Devices
• Examples?
• Secondary Storage
• Examples?

11
Measurement

• CPU Hz
• What does a 2.7 GHz processor mean?
• Storage
• Bits (0 or 1)
• Bytes (8 bits)
• Kilobyte KB (1000 bytes)
• Megabyte MB ( 1,000,000 bytes)
• Gigabyte GB ( 1,000,000,000 bytes)

12
How computers represent data

• Everything is stored in binary 0s and 1s
• ASCII table
• Uppercase A
• Hexadecimal value of 41
• Binary representation of 01000001 (one byte)
• Notepad vs Word demo

13
Secondary storage

• Magnetic
• Examples? Floppy, hard drive, etc
• Optical
• Examples CD ROM, BlueRay
• Solid State
• Examples Flash drives

14
Hardware

• Motherboard large integrated circuit board that
  holds the CPU, RAM, and other electronic
  components
• Bus systems allows data to move throughout the
  hardware components
• Expansion slots allow you to connect other
  hardware to the motherboard
• Port allows you to connect devices to the
  computer
• Examples
• USB ports
• parallel ports (25 pins older printers)

15
ASCII Reference Table Back
7416 0111 0100