CAT Theory

• What is one reason we use computers in our everyday lives?


  To save time by working faster than humans.
• How do computers help reduce labor in work tasks?


  They perform mentally intensive and repetitive physical tasks.
• What is the relationship between computers and resource efficiency?


  Computers are programmed to work more efficiently with resources, saving costs.
• How do computers contribute to cleaner air?


  They are used to monitor and limit carbon emissions.
• What ensures the accuracy of computers in tasks?


  Quality programs and up-to-date software ensure repeatable accuracy.
• What does GIGO stand for in computing?


  Garbage in, garbage out.
• Why are computers considered reliable for tasks?


  They perform tasks accurately without getting tired or bored.
• How do computers facilitate communication?


  They eliminate time and distance restrictions, allowing global communication.
• What are the two main types of computer systems mentioned?


  Non-portable and portable computers.
• What factors should be compared when evaluating computer systems?

  • Power capacity (CPU speed, RAM)
  • Type of usage
  • Size (mobility)
  • Software usage (operating systems)
  • Price
• What is a characteristic of non-portable computers?


  They are large in size and not intended to be moved around.
• What is a benefit of non-portable computers?


  They are generally more powerful than portable computers.
• What type of desktops cost less?


  Desktops with lower specifications.
• What is the difference between smartphones, tablets, and laptops in terms of connectivity?


  Smartphones and tablets are designed to be 'always on' and 'always connected.'
• What is the primary function of personal computers (PCs)?


  Designed to be used by one person at a time for various tasks.
• What tasks can personal computers perform?


  Internet banking, email, social networking, and entertainment.
• What defines SOHO users?


  They use a collection of computer devices connected in a small area like an office or home office.
• What distinguishes power users from ordinary personal computer users?


  Power users need computers with higher specifications for resource-intensive applications.
• What is the purpose of point of sale (POS) technologies?


  To speed up the sales process in a shop.
• What characterizes mobile users in computing?


  They use devices designed to be transported and used while on the move.
• What is an enterprise user?


  An employee who uses a computer in a large company with many employees.
• What is convergence in technology?


  The trend of combining separate technologies into a single device.
• What is the main function of an operating system?


  To control, support, or operate the computer.
• What is the role of input devices in computing?


  To collect data and provide instructions to the computer.
• What is the significance of the algorithm in processing?


  It provides a step-by-step solution for processing tasks.
• What does GIGO imply in computing?

  Human error on output due to poor input quality.
• What are the advantages of using a keyboard?

  It is the fastest way to input text and is easy to learn.
• What are some troubleshooting steps for a non-responsive keyboard?

  Replace batteries for wireless or reconnect for wired keyboards.
• What is the primary function of a mouse?

  To interact with graphical elements on the GUI.
• What are the ergonomic considerations for using a keyboard?

  Wrist rests and split keyboards help maintain a natural hand position.
• What are the advantages of touchscreens?

  They serve as both mouse and keyboard, providing natural interaction.
• What is the disadvantage of using a touchpad?


  It is not as accurate as a mouse.
• What is the primary function of a scanner?


  To capture paper-based images and convert them to digital format.
• What is an advantage of using OCR software with scanned documents?


  It converts scanned text documents to editable text quickly and accurately.
• What is the disadvantage of scanned images?


  The quality depends on the original document and can be affected by dust.
• What are the ergonomic considerations for using a mouse?


  • Use a mouse pad with wrist support.
  • Ensure the mouse shape is comfortable.
  • The mouse should move easily on a smooth surface.
• What are the key functions of hardware devices in computing?


  • Input: Collect data and instructions.
  • Processing: Execute tasks based on software and data.
  • Output: Deliver results to users or other devices.
  • Storage: Save data for future use.
• What are the main types of input devices?


  • Keyboard
  • Mouse
  • Touchscreen
  • Scanner
  • Touchpad
• What are the main types of output devices?


  • Monitor
  • Printer
  • Speakers
• What are the main types of storage devices?

  • Hard drive
  • SSD
  • CD/DVD drive
  • Flash drive
  • External hard drive