How Memory is Measured

• The smallest usable unit of measure for memory is the byte-the amount of memory required to hold one character,like the letter A or the numeral 2.
• Computer work with largest chunks of data,measured in multiple bytes,as shown below;

UNIT                Approx. value(bytes)     Actual Value(bytes)      
kilobyte(KB)      1,000                               1,024

Megabyte(MB)   1,000,000                        1,048,576

Gigabyte(GB)     1,000,000,000                 1,073,741,824

Terabyte(TB)     1,000,000,000,000           1,099,511,627,776