1. To understand the basics of computers.
          2. To analyze the features of computer 
             systems.
          3. To examine the main components that 
             contribute to how computers work.
          4. To observe the purpose and function of 
             various operating systems.
          5. To recognize the concept of networking 
             and how it is utilized by people and 
             businesses. 
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             • Are machines that can store, 
                retrieve and process information
             •  Can be classified by size and power 
             •  Include the following characteristics:
                 – respond to specific instructions in a precise manner
                 – can perform a prerecorded set of instructions
                 – able to store and retrieve large amounts of information
                 – use operating systems to function effectively    
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           • Break down into the five main following 
             types:
              –personal computer (PC): small, single-
                user computer; used in homes and 
                businesses; based on a microprocessor
                  • desktop, laptop, tablet, smart phone
              –work station: powerful, single-user 
                computer; more powerful microprocessor 
                than PCs
           Microprocessor: a chip that is the master control 
           circuit of a computer (CPU)                          5
              –minicomputer: a multi-user computer 
                designed to handle hundreds of users at the 
                same time (Woodcreek Server)
              –mainframe: a powerful, multi-user computer; 
                can support hundreds or thousands of users 
                simultaneously  (Humble ISD Server)
              –supercomputer: an extremely fast computer; can 
                perform hundreds of millions of instructions every second
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