580839
Beschreibung
Mindmap von callumyoung1197, aktualisiert more than 1 year ago
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Erstellt von callumyoung1197
vor fast 11 Jahre
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Computing glossery
- Data
- has no meaning before the computer presses it to turn it in to
something with a meaning which can be output to a user.
- has no meaning before the computer presses it to turn it in to
something with a meaning which can be output to a user.
- Process
- giving data a
context
- giving data a
context
- Output
- data that now means something
- data that now means something
- Constant
- like a variable but it does not change
- for example pi the number would be the literal
- the name you have set it as would be the identifier
- for example pi the number would be the literal
- like a variable but it does not change
- Variable
- something that changes during a program
for example the score of a game
- something that changes during a program
for example the score of a game
- Data types
- the type of data, how it is stored and what it can be used for
- Integer
- 4 Byte
- Integer data type can store any whole
number, such as: -115, 0, 2, 341.
- Integer data type can store any whole
number, such as: -115, 0, 2, 341.
- 4 Byte
- Real
- 8 Byte
- Real data types are used when there is a decimal
point with a fractional number, such as: -32.15678,
0.012, 59.00564, 72.0
- Real data types are used when there is a decimal
point with a fractional number, such as: -32.15678,
0.012, 59.00564, 72.0
- 8 Byte
- String
- 1 Byte
- String can be used to store an alphanumeric character, such as
letter, digit, symbol, space or punctuation mark. It is normally used
as an array so that: String could contain the message ‘Hello
World!’
- String can be used to store an alphanumeric character, such as
letter, digit, symbol, space or punctuation mark. It is normally used
as an array so that: String could contain the message ‘Hello
World!’
- 1 Byte
- Integer
- Character
- 1 Byte
- Character data type can store a single
alphanumeric character, such as: digit, letter,
symbol or any punctuation marks.
- Character data type can store a single
alphanumeric character, such as: digit, letter,
symbol or any punctuation marks.
- 1 Byte
- Boolean
- 1 Byte
- Boolean data types are used for logical
operations and have the value True or
False
- Boolean data types are used for logical
operations and have the value True or
False
- 1 Byte
- information can’t be stored as an array if there are
different data types
- Array- one dimensional one dimensional is a linier list E.G first
name last name, two dimensional a table
- Array- one dimensional one dimensional is a linier list E.G first
name last name, two dimensional a table
- the type of data, how it is stored and what it can be used for
- Array
- one dimensional one dimensional is a linier list E.G first
name last name, two dimensional a table
- one dimensional one dimensional is a linier list E.G first
name last name, two dimensional a table
- < Less than <= less
than or equal to
== equal to >= grater
than or equal to
> grater than != not
equal to
- AND FUNCTION
- it is only true if all the inputs
are the same
- OR FUNCTION
- Is true if either or both
inputs are the same
- Is true if either or both
inputs are the same
- Not function
- on is of and off is on
- on is of and off is on
- it is only true if all the inputs
are the same
- Records are all the information about Fred along the column
- A field id one set of date (a row)
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