COMM 226 Chapter Notes - Chapter 2: Data Element, Gigabyte, Html
28 Mar 2017
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Hardware consists of electrical components and related gadgetry that input, process, output, and store data according to instructions encoded in computer programs or software. It reads data and instructions from memory, and it stores results of computations in main memory. (ram) Random access memory (ram: main memory and it is volatile (content is lost when power is off) Storage hardware: used to save data and programs, magnetic disk, thumb drives, magnetic tape (large data centers). Personal computers (pc): classic computing devices that are used by individuals. Server: computer that is designed to support processing from many remote computers and users. (cid:0) e . g. dell poweredge. Server farm: is a collection of thousands of server pcs smartphones ect that access these servers are called clients. Computers represent data using binary digits, called bits. The data can be numbers, characters, currency amounts, photos, recordings, or whatever. 8 bits = 1 byte and 1 byte represents 1 character.
