INTRODUCTION TO DIGITAL DATA REPRESENTATION
INTRODUCTION TO DIGITAL DATA REPRESENTATION
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By end of this topic, you will be able to describe how data are represented in computer.
By end of this topic, you will be able to describe how data are represented in computer.
Digital Data Representation
Digital Data Representation
Digital Data
Digital Data
Data in digital devices are represented in the form of files. The file sizes range from bits, bytes, kilobytes, gigabytes, terabytes, and petabytes.
Data in digital devices are represented in the form of files. The file sizes range from bits, bytes, kilobytes, gigabytes, terabytes, and petabytes.
Bits
Bits
Numbers that can be represented by 1 bit are 0 and 1.
Numbers that can be represented by 1 bit are 0 and 1.
Numbers that can be represented by 2 bits are 00, 01, 10, 11.
Numbers that can be represented by 2 bits are 00, 01, 10, 11.
Formula to calculate the total number of combinations that can be made from bits is follows:
Formula to calculate the total number of combinations that can be made from bits is follows:
2 number of bit(s)
2 number of bit(s)
Metadata
Metadata
When multimedia data is captured, more data will be stored. Example is when capture a picture using phone, information such as date, time and location will be stored together with the captured image (image data). This is called as metadata.
When multimedia data is captured, more data will be stored. Example is when capture a picture using phone, information such as date, time and location will be stored together with the captured image (image data). This is called as metadata.
Metadata is information about the data. It is not the actual data.
Metadata is information about the data. It is not the actual data.
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