Page "Software" Paragraph 30

Data movement is typically from one place in memory to another.

Sometimes it involves moving data between memory and registers which enable high-speed data access in the CPU.

Moving data, especially large amounts of it, can be costly.

So, this is sometimes avoided by using " pointers " to data instead.

Computations include simple operations such as incrementing the value of a variable data element.

More complex computations may involve many operations and data elements together.