FOCUSFOCUS

Computer HardwareComputer Hardware

Review Information for Final ExamReview Information for Final Exam

ComputerComputer

A programmable electronic machine A programmable electronic machine

that performs high-speed that performs high-speed

mathematical or logical operations or mathematical or logical operations or

that assembles, stores, correlates, or that assembles, stores, correlates, or

otherwise processes information.otherwise processes information.

The Basic Structure of A Computer The Basic Structure of A Computer System Consists of Three PartsSystem Consists of Three Parts

1. CPU - Central Processing Unit1. CPU - Central Processing Unit

The Basic Structure of A Computer The Basic Structure of A Computer System Consists of Three PartsSystem Consists of Three Parts

1. CPU1. CPUPerforms arithmetic and logic operationsPerforms arithmetic and logic operations

2. INPUT – OUTPUT DEVICES2. INPUT – OUTPUT DEVICESKeyboard, Monitor, Modem, Mouse, Joystick, Keyboard, Monitor, Modem, Mouse, Joystick,

Speakers, Printers, etc.Speakers, Printers, etc.

3. MEMORY3. MEMORYPrimaryPrimary – directly accessible by the CPU. – directly accessible by the CPU.

SecondarySecondary – external memory for storing data. – external memory for storing data.

(Peripherals)(Peripherals)

Computer HardwareComputer Hardware

The physical components of a The physical components of a

computer system, such as the computer system, such as the

circuit boards, chassis, enclosures, circuit boards, chassis, enclosures,

peripherals, cables, etc.peripherals, cables, etc.

It does not include data or It does not include data or

computer programs. computer programs.

Computer DiagramComputer DiagramThe Block Diagram as shown below is a representation of The Block Diagram as shown below is a representation of the fundamental pieces of any computer system. So the fundamental pieces of any computer system. So whether it is a PC or MAC or some other type of computer whether it is a PC or MAC or some other type of computer it will have most if not all of these components.it will have most if not all of these components.

Computer HardwareComputer Hardware

RAM ROM(Random Access Memory)(Random Access Memory)

Short term memory in a Short term memory in a

computer. When the computer. When the

computer is turned off, all computer is turned off, all

the information stored the information stored

here disappears. A here disappears. A

memory device in which memory device in which

information can be information can be

accessed in any order.accessed in any order.

(Read Only Memory)(Read Only Memory)

A small memory that A small memory that

allows fast access to allows fast access to

permanently stored data permanently stored data

but prevents addition to or but prevents addition to or

modification of the data.modification of the data.

Computer HardwareComputer Hardware

RAMRAM ROMROM

Computer HardwareComputer Hardware

Central Processing Unit (CPU)Central Processing Unit (CPU)oror

MicroprocessorMicroprocessor

Central Processing UnitCentral Processing Unit

Computer HardwareComputer Hardware

The CPU is usually protectedThe CPU is usually protectedfrom Heat by afrom Heat by a

Heatsink and Fan combinationHeatsink and Fan combination

Fan and Heat SinkFan and Heat Sink

MotherboardMotherboard

MotherboardMotherboard

MotherboardMotherboard

Computer HardwareComputer Hardware

BackupBackupDriveDrive

VideoVideoCameraCamera

ComputerComputerCasesCases

SoundSoundCardsCards

MultimediaMultimediaSpeakersSpeakers

OtherOtherEquipmentEquipment

VideoVideoCardsCardsModemsModems MonitorsMonitorsKeyboardsKeyboardsMiceMice PrintersPrinters

HardHardDrivesDrivesMotherboardsMotherboards

FloppyFloppyDrivesDrives

CPU’sCPU’sProcessorsProcessors

RAMRAMMemoryMemory

CD ROMCD ROMDrivesDrives

USB Flash DrivesUSB Flash Drives

USB flash drives also are called USB flash drives also are called thumb drivesthumb drives, , jump drivesjump drives, , pen drivespen drives, , key driveskey drives, , tokenstokens, or , or simply simply USB drivesUSB drives..

USB flash drives are compact and easy-to-use USB flash drives are compact and easy-to-use devices that are similar in use to your computer devices that are similar in use to your computer hard drive. USB flash drives slip into your hard drive. USB flash drives slip into your pocket, conveniently around your neck or on a pocket, conveniently around your neck or on a keychain for ultimate portable storage.keychain for ultimate portable storage.

Hard DriveHard DriveCover RemovedCover Removed

Hard Disk and Read/Write HeadsHard Disk and Read/Write Heads

Disk TrackDisk Track

Adding RAMAdding RAM

COMPAQCOMPAQ 7000 7000

Back of COMPAQ 7000Back of COMPAQ 7000

Input TerminalsInput Terminals

Input & Output Input & Output TerminalsTerminals

Input & Output Input & Output TerminalsTerminals

Input & Output Input & Output TerminalsTerminals

Power InputPower InputAC Power InputAC Power InputAC Power InputAC Power Input

110 Volt / 220 Volt110 Volt / 220 VoltSelection SwitchSelection Switch

110 Volt / 220 Volt110 Volt / 220 VoltSelection SwitchSelection Switch

Input & Output TerminalsInput & Output Terminals

Most Computers have Icons and Most Computers have Icons and Color Coded Connections to help Color Coded Connections to help with attaching all the Required with attaching all the Required

and Optional Peripherals.and Optional Peripherals.

Most Computers have Icons and Most Computers have Icons and Color Coded Connections to help Color Coded Connections to help with attaching all the Required with attaching all the Required

and Optional Peripherals.and Optional Peripherals.

USBUSBUSBUSBUUniversal niversal SSerial erial BBususUUniversal niversal SSerial erial BBusus

KeyboardKeyboardKeyboardKeyboard

JoystickJoystickJoystickJoystick

MouseMouseMouseMouse

Parallel Parallel PrinterPrinter

Parallel Parallel PrinterPrinter

Universal Universal Serial BusSerial BusUniversal Universal Serial BusSerial Bus

Input & Output TerminalsInput & Output Terminals

MonitorMonitorMonitorMonitor

Input & Output TerminalsInput & Output Terminals

FireWireFireWireIEEE 1394IEEE 1394FireWireFireWire

IEEE 1394IEEE 1394

Audio Inputs and Audio Inputs and OutputsOutputs

Audio Inputs and Audio Inputs and OutputsOutputs

Input & Output TerminalsInput & Output Terminals

NOT for NOT for PhonePhoneNOT for NOT for PhonePhone

Output forOutput fora Phonea Phone

Output forOutput fora Phonea Phone

Line forLine forPhone ModemPhone Modem

Line forLine forPhone ModemPhone Modem

Ethernet JackEthernet JackEthernet JackEthernet Jack

Input & Output TerminalsInput & Output Terminals

Input & Output TerminalsInput & Output Terminals

Inside ViewInside View

Cards and DrivesCards and Drives

Back of DrivesBack of DrivesDVD DRIVE

CD/RW DRIVE

ZIP DRIVE

FLOPPY DRIVE

HARD DRIVE

Cards and DrivesCards and Drives

Expansion CardsExpansion CardsVIDEO CARD

FireWire CARD

1394, i.LINK

SOUND CARD

EITHERNET CARD

MODEM CARD

Power SupplyPower Supply

Heat Sink and FanHeat Sink and Fanon CPUon CPU

RAM CardsRAM Cards

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What is This?What is This?

BatteryBattery

Warning

Static Electricity can Static Electricity can Destroy Computer Destroy Computer

ComponentsComponents