Samsung N640CN2011/SEF manual Refresh rate, Resolution, ROM read-only memory, Sector, Shadow RAM

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Refresh rate

The refresh rate is the rate at which the image on the LCD screen is rewritten to the screen. A fast refresh rate helps keep the image from flickering.

Resolution

The resolution is the sharpness or clarity of the image on your LCD screen. Resolution is measured by the number of pixels the computer’s screen can display. For example, a resolution of 800x600 means that the screen can display 800 pixels in row and can display 600 rows. The more pixels displayed, the higher the resolution and the better the image.

ROM (read-only memory)

Permanent computer memory dedicated to a particular function. For example, the instructions for starting the computer when you first turn on power are contained in ROM. You cannot write to ROM. (ROM is not the same as RAM).

Sector

Also known as disk sector. The portion of a track that is numbered and can hold a specified number of characters (usually 512 KB).

Shadow RAM

A write-protected area of RAM that contains a copy of the BIOS. As the computer boots, the BIOS is copied from its permanent location in ROM to RAM. The BIOS can be executed much faster in RAM than in ROM. The BIOS remains in shadow RAM until you turn off the computer.

TFT (thin film transistor) LCD

A TFT LCD uses a separate transistor circuit to control each pixel. This technology provides the best resolution for an LCD screen. A TFT LCD is also sometimes called an active matrix LCD.

Zoomed video

Zoomed video technology enables zoom video PC Card to transfer data directly from the card to video and audio systems without going through the microprocessor. This process improves video performance. Video conferencing and real-time multimedia devices, such as video cameras, are supported by zoom video.

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Contents Using Your Documentation Special Features of the User’s ManualUsing the Software User Documentation Introducing Your Computer LCDBack View of Computer Using Your Computer for the First Time Attaching the AC AdapterTurning On the Computer’s Power Turning On the ComputerAdjusting the LCD Display APMAdvanced Power Management modeUnderstanding Post Turning Off Your ComputerACPIAdvanced Configuration and Power Interface mode Restarting Your ComputerTips for Using Your Computer Traveling with Your Computer Handling Spills Storing the Computer for Long PeriodsUsing the Keyboard KeyboardUsing the Embeded Numeric Keypad Numeric KeypadUsing Special Function Keys Description of Special Function KeysFn Key Function Combination Using the Keyboard Using the Touchpad Using the TouchpadMouse Action How To Using the Touchpad Reading the System Status Lights System Status LightsReading the System Status Lights Connecting Peripheral Devices Peripheral ConnectorsConnecting Peripheral Devices IconConnectorConnecting Peripheral Devices Using the Flex-Bay Setting the IDE typeDrive Switch To remove a device from the Flex-BayTo install a device in the Flex-Bay Removing a Device from the Flex-BayUsing the Floppy Drive Magnetic fields can destroy the information on a diskUsing the Floppy Drive Using the CD-ROM Drive Using the CD-ROM DriveUsing the CD-ROM Drive Using the DVD-ROM Drive Installing the Power DVD Player MPEG-2 SoftwareUsing the Hard Drive Removing the Hard DriveInstalling a Hard Drive Removing the Hard DriveUsing the Battery Charging the BatterySafely Using the Battery Removing the BatteryInstalling the Battery Removing the Battery PackMonitoring the Battery Charge Using the Battery GaugeUsing PowerProfiler to Monitor the Battery Set options under Battery Status and Alarm SettingsBattery Warnings Battery WarningsCondition Action to Take Using the Modem Sens Modem Naming ConventionPrecautions before use If you use a simple terminal programIf you use a Windows Communication Program Specification Description of 56KInstalling the Modem Driver in Windows Me Install the Modem DriverConfirming Installation of the Modem Driver Selecting a CountryDeleting the Modem Driver Installing the Modem Driver in Windows 95/98 Check if Country is selected correctly Modem Commands What are AT commands?Before Using AT Commands Command modeUsing AT commands Using Command Mode during CommunicationsDisplay the result value Basic AT Commands ATOATS0? Using System Setup Starting System SetupSystem Setup Menus Menu FunctionSystem Setup Navigation Keys Navigation Alternate Function KeyMain Menu Using System Setup Using System Setup Advanced Menu Security Menu Power Menu Using System Setup Boot Menu Exit MenuUsing System Setup Using System Security System PasswordsCreating a Password Deleting a Password Requiring a Boot Password Locking the Hard Drive Boot SectorLocking the Keyboard Using Power Management Options Maximum Power Saving ModeStandby Mode Rest ModeRest Mode Precautions Using PowerProfiler Creating a Save to Disk Partition To create FdiskTo create Phdisk To reinstall your operating system Insert the System Recovery CD-ROMTo reinstall your original applications and drivers Video Features and Configuration Resolution and Color DepthConfiguring Display Features Selecting a Monitor TypeVideo Driver Capabilities Changing Color Depth and Resolution Using the TV-Out Port Changing the Video DriverClick OK and follow the prompts that appear on the screen Using Dual View mode Setting Dual View modeLimits and cautions of using Dual View mode Using several display devices Primary Limits SecondaryTwo Displays Three DisplaysLimits on Video Driver while using Dual View mode Working with PC Cards Maintaining PC CardsUsing PC Cards Windows 98/ MeWindows NT Working with PC Cards Using Options Battery PackAC Adapter Auto Adapter Memory ModulesBefore You Install Memory Installing a Memory ModuleRemoving the Memory Module Compartment Door Installing a Memory Module Hard DrivesSetting the switch on 2nd HDD CD-ROM DriveDVD-ROM Drive Module ZIP DriveSuperdisk LS-120 Drive Docking Options Inserting a 120MB LS-120 diskette into the LS-120 driveAbout Drivers and System Resources DriversIRQs IRQsService Pack 4 for Windows NT About Drivers and System Resources Troubleshooting Operating ProblemComputer does nothing when you turn it on Computer is not behaving as expectedBattery power seems to run out faster than expected PC Card does not work correctlyInfrared Problems Modem ProblemsWhen using a PBX phone system I cant dial on my modem Troubleshooting Specifications Hardware SpecificationsDimension EnvironmentLithium-Ion Smart Battery Ni-MH Dumb BatteryExternal AC Adapter Abbreviations CD-ROMPcmcia Universal serial bus VoltVoltage alternating current Voltage collector currentBoot Boot diskGlossary AC adapterDMA direct memory access Cache memoryCardBus Cmos memoryFloppy disk Hard driveAddress IRQ interrupt request lineRAM random access memory MBmegabyteMegabit Operating systemResolution Refresh rateROM read-only memory SectorRecording the Computer Hardware Configuration Diskette aParallel port Enabled Mode Output only Disabled 42F8, IRQ 2E8, IRQ 3 DisabledDisabled Bi-directional Disabled OtherSecurity Menu Page Important Safety Instruction Iii Federal Communications Commission FCC Federal Communications Commission FCC Part 68 Statement CTR21 Statement Canadian Radio Interference RegulationsClass 1 Laser Productlaserschutzklasse 1 Produkt Power Cord Requirement Country-Specific Power cord Set RequirementsGeneral Requirements Country Accredited Applicable AgencySEV

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