INFS111 chpt 1 slides

• Information system


  People, procedures, software, hardware, data, and the Internet
• Software


  another word for software is Programs, two major kinds: system software and application software
• System software


  Enables application software to interact with computer hardware, includes operating systems, utilities, and device drivers
• Utilities


  Perform specific tasks related to managing computer resources, e.g. antivirus program
• Specialized applications


  More narrowly focused programs liek web authoring
• Apps


  Applications designed for mobile devices, e.g. social media apps
• Types of computers

  • Supercomputers: most powerful computers, they are used by large organisations and are used to process large amounts of data
  • Mainframe computers: not as powerful as supecomputers but still have high processing speed and data storage
  • Midrange computers(servers): does not have peocessing capabilities as powerful as mainfrane, more powerful than personal, used by mediuem organisations
  • Personal computers: least powerful but are mostly used by people.e.g. desktops, laptops, tablets, smartphones and wearables
• Types of personal computers


  • Desktop
  • Laptop (Notebook)
  • Smartphones
  • Wearables
  • Tablet
• name and explain the components of a personal computer hardware

  -system unit: Houses most of the electronic components.e.g. microprocessor and memory

  -input devices: translates data into computer language.e.g. keyboard, mouse

  -output devices: translates computer data into usable information.e.g. display, printer

  -secondary storage: stores data even if power is off.e.g. optical disk,hard disk

  -communication: comm devices aloows PCs to communicate.e.g. modem
• DATA

  Raw, unprocessed facts, processed data becomes information
• Types of computer filesin which data is stored

  • Document files: created by word processors.e.g. letters, brochures, memos
  • Worksheet files: created by electric spreadsheets to analyse things such as budgets and to predict sales
  • Database files: created by database management to contain structured and organised data
  • Presentation files: created by presentation graphics programs to ceate, prepare presentations
• define connectivity and network

  -connectivity is the sharing of information

  -network is a communications system connecting two or more devices
• Cloud computing


  Computers on the Internet, access to more resources
• Wireless technology


  Changing the way we communicate, e.g. tablets, smartphones, wearable devices
• Internet of Things (IoT)


  Continuing development of the Internet, allowing all types of devices to communicate
• Careers in IT


  • Webmaster
  • Software Engineer
  • Computer Support Specialist
  • Computer Technician
  • Technical Writer
  • Network Administrator
• what are the parts of information system?

  • people
  • procedures
  • software
  • hardware
  • data
  • internet
• what is the purpose of software?

  it converts data into software