![]() We will primarily focus on reading and writing text files such as those we create in a text editor. 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. Secondary memory is not erased when the power is turned off. In this chapter, we start to work with Secondary Memory (or files). So up to now, our programs have just been transient fun exercises to learn Python. It is where all of the “thinking” happens.īut 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. The CPU and memory are where our software works and runs. ![]() We have learned how to create and use data structures in the Main Memory. So far, we have learned how to write programs and communicate our intentions to the Central Processing Unit using conditional execution, functions, and iterations.
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