EECS 1520 Chapter Notes - Chapter 11: Word Processor, Root Directory, Working Directory
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EECS 1520 Full Course Notes
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Main memory where active programs and data are held while in use; volatile, data lost if electric power turned of. Secondary memory nonvolatile, data maintained even if power is of; used as permanent storage for data. Includes: hard drives found in computer"s main box, portable discs that can be moved between computers. Tape drives used for archival purposes. File named collection of related data. File system logical view that an operating system provides so that users can manage information as a collection of iles. Directories a named group of iles; also called folder. Text ile bytes of data are organized as characters from ascii or unicode character sets. Coding systems (coded characters) assigns numbers to each character/key/symbol. Unicode - 16-digits, can accommodate other languages. Binary ile contains data in speciic format, requiring interpretation/ associated software. All data on computer stored as binary digits. Source ile program written in high-level language stored as text ile.