So far, we have learned how to write programs and communicate our intentions to the Central Processing Unit using conditional execution, functions, and iterations. But if you recall from our hardware ...So far, we have learned how to write programs and communicate our intentions to the Central Processing Unit using conditional execution, functions, and iterations. But if you recall from our hardware architecture discussions, once the power is turned off, anything stored in either the CPU or main memory is erased. Or in the case of a USB flash drive, the data we write from our programs can be removed from the system and transported to another system.