1.3 Computer Concepts

• Meaning of computer, data and information
• Characteristics of a computer: speed, accuracy, versatility, reliability, diligence, storage, consistency
• Classification of computers by functionality
• Classification of computers by purpose and by size
• Using a computer to perform tasks in a user environment
• Importance of different types of computers in Kenyan daily life

• explain the characteristics of a computer in a user environment
• classify computers used in day-to-day life
• use a computer to perform tasks in a user environment
• acknowledge the importance of different types of computers used in day-to-day life

“Why are computers classified differently?”

“How are computers used in day-to-day life?”

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1. Computer, data and information
   40 min · 1 practice tasks · quiz
   Meanings of computer, data and information, with Kenyan school and till examples of the flow from raw facts to useful output.
2. Characteristics of a computer
   40 min · 1 practice tasks · quiz
   Speed, accuracy, versatility, reliability, diligence, storage and consistency in a user environment.
3. Classifying computers by functionality
   40 min · 1 practice tasks · quiz
   Analog, digital and hybrid computers: how each handles data, with Kenyan examples.
4. Classifying computers by purpose and by size
   40 min · 1 practice tasks · quiz
   General-purpose versus special-purpose computers, and size from supercomputers to microcomputers, including phones.
5. Using a computer to perform tasks
   40 min · 1 practice tasks · quiz
   Input-process-output-store in a user environment: power on, type, calculate, save, print, shut down, with care and online safety.
6. Types of computers in Kenyan daily life
   40 min · 1 practice tasks · quiz
   Acknowledging why phones, cyber cafes, school labs and M-Pesa agents use different types of computers.