Unit I - Data representation (IGCSE) -key terms

Front

What is a bit?

Back

The basic computing element that is either 0 or 1, formed from the words Binary digit.

Front

What is the binary number system?

Back

A number system based on 2 that can only use the values 0 and 1.

Front

What is the hexadecimal number system?

Back

A number system based on the value 16 which uses denary digits 0 to 9 and letters A to F.

Front

What is an error code?

Back

An error message generated by the computer.

Front

What is a MAC address?

Back

Standing for Media Access Control, this address uniquely identifies a device on the internet in hexadecimal format.

Front

What is an IP address?

Back

Internet Protocol address identified as either IPv4 or IPv6, giving a unique address to each device on a network.

Front

What does HTML stand for?

Back

HyperText Mark-up Language, used in the design of web pages.

Front

What is an overflow error?

Back

The result of a calculation that produces a value too large for the computer’s allocated word size.

Front

What is a logical shift?

Back

An operation that shifts bits to the left or right in a register, replacing shifted-out bits with zeroes.

Front

What is two’s complement?

Back

A method of representing negative numbers in binary.