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The collective name for letters, digits and symbols.
A continuous signal which can't be processed by a computer.
AND logic gate
A logic gate with two inputs. The output will be on if both of the inputs are on. If either is off, the output will be off.
A 7-bit character set consisting of 128 characters (8th bit is used as parity bit).
A counting system using base-2 consisting of Os and 1s.
The process of adding two binary numbers together. The rules for each digit: 1 + 1 = 0 with carry; 1 + 0 = 1 with no carry; 0 + 1 = 1 with no carry; 0 + 0 = 0 with no carry, 1 + 1 + carry = 1 with carry.
binary converting to/from denary
The process of converting binary numbers to or from decimal (Base 10).
binary converting to/from hexadecimal
The process of converting binary numbers to or from hexadecimal (Base 16).
When the binary number resulting from some arithmetic is to large for the available space, the overflow or carry flag is set.
Moving the bits in a binary number left or right and filling the gaps with Os.
A binary digit, either O or 1.
The number of bits used per second of sampled audio.
A graphic that is made up of pixels.
Boolean logic gates
Logic circuits are special circuits built into computer chips. They receive binary data, apply Boolean operations and output binary results.
A single alphanumeric symbol.
A group of characters that a computer recognises from their binary representation.
A digit added to a string of digits which is used to check if all the digits have been entered and read correctly.
The number of bits used for each pixel in an image file.
The process of making the size of a file smaller.
A number system using base-10. Also known as decimal.
denary converting to/from binary
The process of converting decimal numbers to or from binary (Base 2).
denary converting to/from hexadecimal
The process of converting decimal numbers to or from hexadecimal (Base 16).
The representation of an analogue signal using binary data.
With a monocle.
dots per inch
An 8-bit character set consisting of 256 characters.
A counting system using base-16 consisting of the digits 0-9 and the letters A-F.
hexadecimal converting to/from binary
The process of converting hexadecimal numbers to or from binary (Base 2).
hexadecimal converting to/from denary
The process of converting hexadecimal numbers to or from decimal (Base 10).
Pictures stored within a computer.
An electronic circuit for performing logic operations on binary data. It may have more than one logic gate and more than two inputs.
An electronic circuit component that performs a Boolean operation (e.g. AND, OR or NOT).
Temporarily removing data from a file to decrease the file size.
Permanently removing data from the file to decrease the file size.
Extra data stored in a file which gives information about the file's properties.
NOT logic gate
A logic gate with one input. The output will be on if the input is off. If the input is on, the output will be off. Also known as an invertor.
One of the Boolean operators.
OR logic gate
A logic gate with two inputs. The output will be on if either, or both, of the inputs are on. If either both are off, the output will be off.
An error that occurs when the computer attempts to process a number that has too many bits for it to handle.
A bit placed at the end of binary data to show if it's been received correctly.
Small dots that make up a bitmap image.
The density of pixels in an image, often measured in dpi (dots per inch).
The number of bits available for each audio sample.
The process of converting analogue signals to digital data.
The number of audio samples that are taken per second.
The time between each sample.
Noises stored within a computer
A table listing all possible binary inputs through a logic circuit, with the corresponding outputs.
A large character set that attempts to include all possible characters.
units (of data)
A standard set of measurements to cover the size of items stored in memory