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IT > Digital Data Representing Data > Flashcards

Digital Data Representing Data Flashcards

1
Q

Give the definition and examples of data.

A

Data is raw facts or figures that mean nothing for example 151216, 85748, AABBCCDD.

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2
Q

What is the difference between data and information?

A

Information is data in context.

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3
Q

Give examples of data turned into information.

A

Data, Information
151216, 15th December 2016
85748, product number
AABBCCDD, grades in exams.

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4
Q

What are the units of data called?

A

Bit, nibble, byte, kilobyte, megabyte, gigabyte and terabyte.

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5
Q

What is a bit?

A

It is the smallest unit of data and is either a 1 or 0.

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6
Q

What is a nibble?

A

A nibble is 4 bits.

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7
Q

What is a byte?

A

8 bits or 2 nibbles. A caricature is represented by a byte.

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8
Q

What is a kilobyte?

A

A kilobyte is 1024 bytes. Abbreviated to KB. Equivalent to 1024 caricatures on screen.

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9
Q

What is a megabyte?

A

1024 kilobytes. Abbreviated to MB.

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10
Q

What is a gigabyte?

A

1024 megabytes. Abbreviated to GB.

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11
Q

What is a terabyte?

A

1024 gigabytes. Abbreviated to TB.

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12
Q

Name the data types.

A

Numeric, date time, character, string.

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13
Q

What are the 2 types of numeric values you can get?

A

Integer and real.

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14
Q

What is numeric data type@

A

A data type that contains numbers.

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15
Q

What is an integer?

A

It is a whole number eg. 2, 7, 10, -23

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16
Q

What is a real numeric number type?

A

A number that has a decimal place eg. 1.23, 5.36, -23.45

17
Q

What is date time numeric type?

A

It allows a date to be stored.

18
Q

Give examples of date.

A

18/12/2016, 18-12-16, 18th of December 2016

19
Q

Give examples of time.

A

9pm, 9:00pm, 21:12:05, 23:00

20
Q

What is character data type?

A

A letter, number and symbol are all characters.

21
Q

What is string data type also known as?

A

Text of alphanumeric.

22
Q

What is string data type?

A

It allows letters, numbers, punctuation marks and symbols to be entered.

IT (14 decks)

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