What is data?
Data represents raw facts and figures or a set of values. Other subjects may also gather data e.g Geogoraphy where data may be collected using a questionnaire.
A set of data might consist of 2, 4 , 3, 5, 6
another more familiar set of data which will be collected is examination results, such as 23, 45, 67, 98, 78
Data represents raw facts and figures or a set of values. Other subjects may also gather data e.g Geogoraphy where data may be collected using a questionnaire.
A set of data might consist of 2, 4 , 3, 5, 6
another more familiar set of data which will be collected is examination results, such as 23, 45, 67, 98, 78
Types of data
Data doesnt always have to come in the form of text as numbers it can also take the form as moving images, or sound.
Bits and bytes
Not matter what type of data is being entered into the computer, it will always store and process the data using binary numbers. A single unit in binary is called a 'bit' which stands for a binary digit
Computer memory is measured in 'bytes'. One byte is made up of eight bits. One byte can store one character, for example:
The letter A is represented by 01000001, B by 01000010
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