Computer HardwareComputer Hardware Introduction to Computer Components and Terminology
Computer TypesComputer Types nPersonal Data Assistant (“PDA”), now more commonly called a “tablet” or iPad nNotebook nLaptop PC nDesktop PC (also called a PC “tower”) nServer Computers are categorized as one of several types:
Differentiating TypesDifferentiating Types nA PDA is a handheld computing device designed to access and store data as well as accessing stored music, personal datebook, and personal address book. nExamples of PDAs are: Palm, Blackberry, iPads, iPhones, and tablets iPad Blackberry Palm Pilot iPhone
Differentiating TypesMacintosh Quad PC Macbook Air Macbook Pro nA Notebook is a laptop computer that runs with the Mac OS®, currently “Yosemite” n Desktop PCs running the Mac OS are only manufactured by Apple Computer. Differentiating Types
Differentiating TypesDifferentiating Types nA PC is a personal computer that runs with the Windows® operating system. nPCs may be either desktop “towers” or laptop models nPCs are designed for business and personal use. Laptop PC Desktop PC
Differentiating TypesDifferentiating Types nA Server is a large computer designed to network multiple personal computers. nServers allow for the exchange of data among all members of the network. nServers store data common to all users. Tower Blade Server
Basic PC ComponentsBasic PC Components nPCs are made up of hardware and software components nThe various components of a PC are interconnected with very specific cables nComputers are networked with cables and switches.
HardwareHardware Hard Drive nThe PC tower houses the mother board, hard drive and power supply. Motherboard containing the Central Processing Unit (CPU) and Memory boards Power Supply
Input/Output DevicesInput/Output Devices nInput/Output devices are used to enter and retrieve data to and from the computer. nI/O devices are the keyboard, mouse and monitor.
Data StorageData Storage nData is any text, graphic, or photo to be stored or accessed on the computer. nData storage devices may be built in, external, or portable. nData storage devices include hard drives, disc drives, USB flash drives and SD memory card readers
Data Storage DevicesData Storage Devices Compact Disc (CD) USB Flash Drive SanDisk (SD) Memory Card Micro SD Memory Card and adapter USB Mini Flash Drive
Cables and ConnectionsCables and Connections nIn addition to the power cord, the various components of a PC are interconnected by specific type cables. nA basic PC that is not networked or accessing the internet will have 3 cables – one for the monitor, and one each for the mouse and keyboard.
Wireless InterfacesWireless Interfaces nWireless devices, such as a mouse, keyboard, presentation tool, etc. connect to the PC via a “dongle.” nA dongle is any wireless USB transmitter/receiver designed to communicate with a specific device.
Cables and ConnectionsCables and Connections nThe mouse will connect to the PC via a USB cable or wirelessly via a dongle.
Cables and ConnectionsCables and Connections nThe monitor is connected to the PC via either a 15-pin male-to- male VGA cable or n19-pin DVI cable VGA Cable DVI Cable
Cables and ConnectionsCables and Connections Connecting to a network or the internet is done via a Cat 5 cable with an RJ45 connector. The internet cable is connected between the PC and a server, often through a switch.
TerminologyTerminology nVGA = Video Graphic Adapter nDVI = Digital Video Interface nUSB = Universal Serial Bus nDongle = Any USB transmitter/receiver interface (for connecting to a mouse, keyboard, etc.) nCat 5 = Category 5, referring to the number of twists in a given length of cable. nRJ45 = a cable termination plug for a 4-pair cable.
Cat-5 CablesCat-5 Cables nThe Cat-5 cable used in this lab is made up of FOUR pairs of 24 gauge copper wire. nThe individual wires are covered in color-coded plastic casings nThe entire bundle is encased in blue or gray plastic nCasings shield the wires so they do not touch each other and short out
Cat-5 CablesCat-5 Cables Wire color codes use a solid color alternating with a solid and white of the same color to make each pair.Color pairs in the Cat-5 wire are Orange, Blue, Green, and Brown.
Basic Hardware TroubleshootingBasic Hardware Troubleshooting nCheck that the power cables are all plugged into devices and to the wall. nCheck that the monitor is connected to the PC with a VGA cable. nCheck that the keyboard and mouse are connected correctly nCheck that the network cable is connected between the PC and the switch, AND check that the switch is powered up.