Read time - PowerPoint PPT Presentation

Programmer’s View of Files

Programmer’s View of Files. Logical view of files: An a array of bytes. A file pointer marks the current position. Three fundamental operations: Read bytes from current position (move file pointer) Write bytes to current position (move file pointer)

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247 views • 15 slides

Chapter 8

Chapter 8. File Processing and External Sorting. Primary vs. Secondary Storage. Primary storage : Main memory (RAM) Secondary Storage : Peripheral devices Disk drives Tape drives. Comparisons. RAM is usually volatile . RAM is about 1/4 million times faster than disk.

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267 views • 13 slides

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