Chapter 2: Computer Hardware1 Computer Hardware Chapter 2
Chapter 2: Computer Hardware2 Desktop and Portable Computers Desktop Computer Portable computer Notebook computer Tablet computer UMPC
Chapter 2: Computer Hardware3 Microprocessor Basics Microprocessor
Chapter 2: Computer Hardware4 Microprocessor Basics Front side bus Microprocessor clock Word size Cache CISC vs. RISC
Chapter 2: Computer Hardware5 Microprocessor Basics Serial processing Parallel processing Dual core processor Hyper-Threading Technology
Chapter 2: Computer Hardware6 Today’s Microprocessors
Chapter 2: Computer Hardware7 Random Access Memory
Chapter 2: Computer Hardware8 Random Access Memory Capacitors Most RAM is volatile
Chapter 2: Computer Hardware9 Random Access Memory RAM capacity is expressed in megabytes or gigabytes Personal computers Virtual memory
Chapter 2: Computer Hardware10 Random Access Memory RAM speed is often expressed in nanoseconds or megahertz –SDRAM –RDRAM
Chapter 2: Computer Hardware11 Read-Only Memory ROM ROM BIOS
Chapter 2: Computer Hardware12 EEPROM Electrically Erasable Programmable Read- Only Memory Permanence Power?
Chapter 2: Computer Hardware13 Storage Basics Storage medium Storage device
Chapter 2: Computer Hardware14 Magnetic Storage Magnetic storage
Chapter 2: Computer Hardware15 Magnetic Disk Hard disk platters and read- write heads are sealed inside the drive case or cartridge to screen out dust and other contaminants.
Chapter 2: Computer Hardware16 A controller positions the disk and read- write heads to locate data Durability? Magnetic Disk
Chapter 2: Computer Hardware17 Magnetic Disk and Tape Technology Floppy disk Tape drive A tape is a sequential storage medium
Chapter 2: Computer Hardware18 CD and DVD Technology Optical storage stores data as microscopic light and dark spots on the disk surface –CD and DVD storage technologies
Chapter 2: Computer Hardware19 CD and DVD Technology
Chapter 2: Computer Hardware20 Solid State Storage Solid state storage Non-volatile Card reader may be required
Chapter 2: Computer Hardware21 Solid State Storage USB flash drive U3 drive
Chapter 2: Computer Hardware22 Storage Wrap-up Most desktop computers have several drive bays
Chapter 2: Computer Hardware23 Storage Wrap-up
Chapter 2: Computer Hardware24 Basic Input Devices Keyboard Pointing device Touch screen
Chapter 2: Computer Hardware25 Display Devices CRT LCD Plasma
Chapter 2: Computer Hardware26 Display Devices Viewable image size Dot pitch Viewing angle width Refresh rate Color depth Resolution –VGA, SVGA, XGA, SXGA, UXGA, and WUXGA
Chapter 2: Computer Hardware27 Display Devices
Chapter 2: Computer Hardware28 Printers Ink-jet printer A laser printer works like a photocopier
Chapter 2: Computer Hardware29 Printers Dot matrix printers
Chapter 2: Computer Hardware30 Installing Peripheral Devices Data bus Expansion cards –Expansion slot –PCMCIA slot
Chapter 2: Computer Hardware31 Installing Peripheral Devices An expansion card slides into an expansion slot and is secured with a small screw.
Chapter 2: Computer Hardware32 Installing Peripheral Devices Expansion port Peripheral device may include the Plug and Play feature, or require a device driver
Chapter 2: Computer Hardware33 Surge Protection and Battery Backup Power surge Surge strip UPS
Chapter 2: Computer Hardware34 Basic Maintenance Computer component failures can be caused by manufacturing defects and other circumstances beyond your control Keep the keyboard clean Clean your computer screen on a regular basis Keep the area clean around your computer Make sure fans are free of dust
Chapter 2: Computer Hardware35 Troubleshooting and Repair Telltale signs that your computer is in trouble –Failure to power up –Loud beep –Blue screen of death Help and Support Center Safe Mode
Chapter 2: Computer Hardware36 Chapter 2 Complete Computer Hardware