COMM 226 Lecture Notes - Lecture 2: Dell Poweredge, Internet Service Provider, Local Area Network
18 Jan 2017
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Harware: consists of electrical components and related gadgetry that input, process, output, and store data according to instructions encoded in computer programs or software. Central processing unit (cpu): selects instructions, processes them, performs arithmetic and logical comparisons, and stores results of operations in memory. Some computers may have 2 cpus (dual-processor) or more (quad-processor). It also works in conjunction with main memory. 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. Server farm: is a collection of thousands of server pcs smartphones ect that access these servers are called clients.
