The processor finds programs and data from memory when it does its assigned task. The memory is the place where every thing is kept. The microcomputers memory is just a temporary space like a chalkboard where the computer scribbler while work is being done. Unlike human memories, the computers memory is not a permanent repository. The computers memory simply provides a place where computing can happen.
The processor makes a vital distinction between programs and data. But to the computers memory there is no difference between programs and data. It is like a piece of paper that neither knows nor cases what one writes on it. It is the same with the microcomputers memory. Only the processor recognizes the difference between program and data.
Anything can be written on the memory, and the writing can be changed by writing over it. Unlike a chalkboard, the computers memory doesnt have to be asaped before something new can written to it, the act of writing automatically eraser what was in the memory before. Reading information from the memory is simple and straightforward as reading any thing written on paper. Both the processor and the I/O devices have the capability to read and write data from and to the main memory.
