Units
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What do computers use units for?
Computers use units for measuring data
What are Bits?
A single binary digit (1 or 0). Bits are the smallest measure of data
What does 1 represent?
1 is used to show that electricity is flowing
What does 0 represent?
0 is used to represent that electricity is not flowing
What is a nibble?
4 bits
What is a byte(B)?
8 bits
What is a kilobyte(KB)?
1000 bytes
What is a megabyte(MB)?
1000 kilobytes
What is a gigabyte(GB)?
1000 megabyte
What is a terabyte(TB)?
1000 gigabytes
What is a Petabyte(PB)?
1000 terabytes
What is a byte used to store?
A byte is big enough to store one character (like x,e,m, £)
What are KBs or MBs used to store?
Most files like songs, pictures, documents
What are GBs used to store?
HD files and complex apps
What a GBs and TBs used to store?
Secondary Storage capacity
How many values can bits take?
one of two different values (1 or 0)
How many values can Nibbles take?
2⁴=16 different values
How many values can a byte take?
2⁸= 256 different values