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Title: Lesson 2.1 Computer Basics
Description: This lecture note will cover the basic terminologies about computer as well as the different types of computers plus the Information Size Measurement in a brief but informative manner.
Description: This lecture note will cover the basic terminologies about computer as well as the different types of computers plus the Information Size Measurement in a brief but informative manner.
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Computer Basics
Computer Applications
• Business
•
•
•
•
•
Mathematics and Science
Engineering
Medicine
Education
Entertainment
Computer
• A device that
accepts input,
process data,
stores data, and
produces output,
all according to a
series of stored
instructions
Beginning Terms
• Hardware – physical parts of the
computer (components of computer)
• Software – set of instructions that tell the
computer what to do
...
Collection
of facts
...
Composed of binary codes 0’s and 1’s
• Byte – 8 bits = 1 character
• Character – Letter or number or
punctuation mark
Computer Terminologies
• File – named collection of data that exist
on a storage medium
• Data file – files which are regarded as
passive, the data does not instruct the
computer to do anything
• Executable file – files which are
considered as active, the instructions
stored in the file cause the computer to
carry out some actions
Information Size
Measurement
• Kilobyte (KB)
-1 KB = 1024 bytes, 140 words
• Megabyte (MB)
-1 MB = 1000 KB, 1,000,000 bytes, 500
pages of text or 1 large book
• Gigabyte (GB)
- 1 GB = 1000 MB, 1,000,000 KB,
1,000,000,000 bytes, 1,000 books of text
Title: Lesson 2.1 Computer Basics
Description: This lecture note will cover the basic terminologies about computer as well as the different types of computers plus the Information Size Measurement in a brief but informative manner.
Description: This lecture note will cover the basic terminologies about computer as well as the different types of computers plus the Information Size Measurement in a brief but informative manner.