SLR13 Data Types

Define the characteristics of each of the primitive data types (integer, real, character, string, Boolean)

Categorise data into these data types

Describe how number bases work

Understand why computer systems are built on the binary number system

Represent denary (base-10) integers in binary (base-2)

Consider how signed numbers may be stored in binary

Understand the sign and magnitude and two's complement number systems

Describe the advantages and disadvantages of sign and magnitude and two's complement

Consider how binary numbers may be added and subtracted

Understand the addition of a negative number as subtraction

Consider the difficulty posed to humans in reading long strings of binary numbers

Understand the role of hexadecimal in Computer Science

Convert integers to and from binary, denary and hexadecimal

Understand how binary place value is calculated

Consider how decimals may be stored in binary

Consider issues of accuracy in storing decimals in binary

Convert denary fractions to and from fixed and floating point binary representation

Consider how characters could be stored as numbers

Understand the need for a protocol for character sets

Describe the merits and drawbacks of ASCII, extended-ASCII and Unicode

Understand how to perform addition and subtraction of floating point binary numbers

Describe what is meant by binary masking

Understand the effects of bitwise manipulation

Perform logical and arithmetic binary shifts