# ICT - binary and logic gates

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Bit
is a binary digit, a bit can also mean and be 0/1- e.g. true or false, yes or no and on and off. 8 bits are equal to one byte
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Byte
It is the smallest unit of data stored on a computer. It is also a unit in computing or telecommunications that most commonly consists of eight bits
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Nibble
a nibble is half of a bit. It is the term given to a group of 4 bits.Therefore two nibbles make a byte
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Resolution
A television technolodgy term. this means how many lines, pixels or dots are present over a standard length
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Bit depth
Refers to the colour information stored in an image. the higher the bit depth of an image, the more colours it can store.
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AND gate
an and gate has two inputs.
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NOT gate
a NOT gate (inverter) has only one input and reverses the logic state.
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OR gate
an OR gate can have two or more inputs. the output will be positive (true) if at least one input is true.
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XOR gate
an XOR gate is an exclusive OR gate that means it must be either or 1 (not both).
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Binary
a number system that uses only two values (0,1 ; on,off)
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A truth table
A truth table is a way of presenting all possible possibilities. Truth tables are drawn to help you to calculate the outcome when you only know the income or the other way around.
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A logic diagram
a graphical representation of a program using formal logic
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## Other cards in this set

### Card 2

#### Front

It is the smallest unit of data stored on a computer. It is also a unit in computing or telecommunications that most commonly consists of eight bits

Byte

### Card 3

#### Front

a nibble is half of a bit. It is the term given to a group of 4 bits.Therefore two nibbles make a byte

### Card 4

#### Front

A television technolodgy term. this means how many lines, pixels or dots are present over a standard length

### Card 5

#### Front

Refers to the colour information stored in an image. the higher the bit depth of an image, the more colours it can store.