Foundation of Democracy Essay

Desktop ComputersAlso called mortalal electronic computers. tantalise on,beside,or under a desktop.Notebook or LaptopsSimilar to desktopsAdvantagesNetbookSimilar to a notebookFor wireless dialogue or access to the internetTabletsLooks similar to a notebookTouch screens capabilityServersA computer dedicated to shaaring resources among 2 or more computers and managing large amounts of data. Hand-held or Mobile ComputersAny figuring devices that fits in the palm of your hand and is portable. Cellular PhonesPersonal Digital Assistants (PDA)Music or Media Players (ipods ,Mp3)Game systems (wii, playstations)electronic Book Readers (kindle, Nook)CalculatorsLooking at the system unitsometimes called the Box or Tower. about expensive part of the computer system.Devices in the system Power supplyMother add-inMicro processor retentivityPower SupplySupply the necessary power to run components in the systemunit. MotherboardThe central printed circuit board in the system unit that holds many o f the crucial comporents. Connecting DevicesParallelSerialPortsUniversal Serial BUS(USB) communicate PortsUsed for connecting to anotheer computer on a network ,a modern ,or to the internet Ethernet of firewireDevice DriverTo change communication between the operating system and the device. What is a software Program?A step by step set of instructions that tell a computer what to do. Software applications are created using program languages. A complex code that activate functions and complete tasks. Computer software code is based on a set of rules called algerithms ErgonomicsFitting the job to the peoplewho have to do it,through the design of equipment and procedures. Fitting the person to the job, through use of placement procedures or training. Application requires matching tasks demands and environmental conditions with user characteristics. Ergonomics originated during the import world war to overcome performance failures due to human error in new full(prenominal) tech defe nse systems. Proper lighting for visionby utilizing prortable adjustable lamps for each workstations, and indirect lighting sources some grammatical case of blinds for windows to reduce glare including to the computer screens. Proper posture using adjustable desk and chairs with height.