Grade 7 Computer Studies Revision Booklet: Questions and Answers

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Download high quality Grade 7 Computer Studies Revision Booklet: Questions and Answers.

FOUNDATION OF COMPUTER SCIENCE
Define the following terms
1. Computer
An electronic device that accepts data from a user, Processes the data using given instructions, stores it and presents it in a desired format
2. Data
Raw facts which include numbers, texts, images, audios or videos that input into a computer
3. Information
Data that has been processed and made meaningful to the user

Name four Examples of computers
1. Notebooks
2. Smartphones
3. MacBook
4. PDA
5. Desktop computer
6. Laptop
7. Ipad
8. Tablet
9. Smartwatch
10. Server

State the Characteristics of a computer
1. Speed
A computer works at a higher speed than human beings
2. Storage
Computers have storage space that can hold large amounts of data and information
3. Multitasking
Computers can perform more than one task`s at the same time
4. Accuracy
Computers give information without errors if given the correct data and instructions
5. User dependant
Computer cannot work without instructions from the user
6. Versatility
Computers have ability to perform a variety of task (complex and simple)
7. Reliability
The electronic components in modern computer have very low failure rate. The modern computer can perform very complicated calculations without creating any problem and produces consistent (reliable) results.
8. Diligence
Computers, unlike frail human beings, do not become bored or tired or lose concentration when performing highly repetitive work. If a computer has to perform a certain calculation on a million numbers, it will calculate the first and the last with equal diligence. This enables trust to be placed in the results generated by computers, and confidence to be replaced in their ability – neither of which can always be replaced in humans!
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