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Questions and Answers
What characteristic of a computer allows it to perform tasks without human intervention?
Which characteristic ensures that computers can perform billions of calculations per second?
If the input data is incorrect, what characteristic of a computer is compromised?
Which data processing activity involves preparing data for further processing?
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What can be an example of data received by a computer in various forms?
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What are the key characteristics of a computer?
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What does the term 'data processors' refer to in the context of computers?
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Where are computers commonly found in today's society?
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What is the origin of the word 'computer'?
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What role does the internet play in relation to computers?
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Study Notes
Introduction
- Computers are essential for modern life, found in various settings.
- They simplify tasks like word processing, emailing, calculations, and database management.
- Key characteristics of a computer are receiving, processing, and storing data.
Meaning and Definition
- The word "computer" comes from "compute," which means "to calculate".
- A computer is an electronic device that processes data based on instructions, resulting in a calculated output.
Characteristics of a Computer
- Automatic: Computers are able to work without human intervention.
- Speed: Computers operate at high speeds (microseconds, nanoseconds, or picoseconds), enabling billions of calculations per second.
- Accuracy: Computers are accurate if given correct input data, capable of achieving 100% accuracy.
- Diligence: Computers can work continuously without fatigue, unlike humans.
Data Processing Activities
- Data processing involves three main activities: capturing input data, manipulating data, and managing output results.
Data Processing in Various Forms
- Computers receive data in different forms, such as bio-data, student marks, and airline reservations.
Data Flow Diagram
- Input data undergoes operations and calculations, generating the final output.
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Description
This quiz covers the fundamental aspects of computers, including their definition, characteristics, and data processing activities. Understand the critical role computers play in modern life and their ability to perform tasks automatically with high speed and accuracy.
