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1.4.1 Data Types

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Total cards: 15•Content version: v4•Public deck•Updated: 8/1/2026

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#1
Front (Question)

Primitive data types

Back (Answer)

One which is provided by a programming language E.g, integer, real/float, Boolean, string

#2
Front (Question)

Integer

Back (Answer)

A whole number E.g, 0, 231, -67

#3
Front (Question)

Real/Float

Back (Answer)

A number decimal/fraction E.g, 12.5, 0.0, -100.0001

#4
Front (Question)

Character

Back (Answer)

A letter number or special character

#5
Front (Question)

Boolean

Back (Answer)

A Boolean variable can only be TRUE or FALSE

#6
Front (Question)

String

Back (Answer)

Anything in quotation marks(single or double ‘…’ “…”)

#7
Front (Question)

Sign and Magnitude

Back (Answer)

Making the 128 bit the sign bit 00000011 = 3 10000011 = -3

#8
Front (Question)

Two’s complement

Back (Answer)

Write down the unsigned binary Invert every bit Add 1

#9
Front (Question)

Hexadecimal

Back (Answer)

16 figures 0-9 and A-F

#10
Front (Question)

Denary

Back (Answer)

A numerical system that uses 10 as its base 0-9

#11
Front (Question)

Floating point arithmetic

Back (Answer)

Allows very large numbers to be represented using the mantissa and the exponent

#12
Front (Question)

A Bit

Back (Answer)

A bit is the fundamental unit of information in the form 0 or 1

#13
Front (Question)

ASCII

Back (Answer)

American Standard Code for Information Uses 7 bits which form 128 different bit combinations

#14
Front (Question)

UNICODE

Back (Answer)

A 16-bit code to represent all possible characters

#15
Front (Question)

Character sets

Back (Answer)

Groups of code that assign a character to a unique bit pattern