representing data Flashcards
difference between information and data
Data is meaningless, raw facts and figures that have no context or meaning. information is when data is processed it is given meaning>
what is a bit?
smallest unit of storage.
Bit= binary digit
either 1 or 0
What is a nibble?
group of 4 bits
what is a byte?
8 bits
what is a kilobyte
1024 bytes
what is a megabyte
1024 kilobytes
what is a gigabyte
1024 megabytes
what is a terabyte
1024 gigabytes
what is an integer
A whole number either positive or negative
what is a real numberic data type?
Number that contains a decimal point
what is a character
a letter, number and symbol.
one byte
= A’, 5’, &’
what is a string
allows letters, numbers, punctuation marks and symbols
=”katie”, “Mary black”
(text/alphanumeric)
what is date/time
allows a date or a time to be stored
