EET 450 – Lecture 1 Chapter 1 – How Computers Work.

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Presentation transcript:

EET 450 – Lecture 1 Chapter 1 – How Computers Work

Computer overview  CPU is central control point Some features now bypass the CPU

 CPU accesses Memory Mass Storage Console/human interface –Monitor / keyboard / mouse Peripherals

Motherboard  Provides spot for CPU(s)  Most Main Memory  Integrated peripheral ports USB Serial Parallel [video] [sound]

Motherboard  Onboard storage support IDE/EIDE SCSI Raid  ‘Glue Logic’ provides communications path among on-board components

Motherboard  Expansion Bus May have ports for expansion cards –ISA (obsolete) –PCI –AGP –Others  Memory Support SIMM/DIMM, etc.

Housing  Contained in a case Standardized shape / size Port accesses/connectors  Power Supply Provide power from AC source  Drive Access

Software  BIOS On main board May be Part of ‘Glue’ Flash/EEProm Upgradable  CMOS Battery protected or EE memory settings

Software  Operating System Provides application program link to hardware ‘universal trailer hitch’ CPU Dependent  Network OS Windows 95/98/2000/XP (ME) Unix / Linux MAC OS

File Storage System  FAT – File allocation Table  NTFS – Windows NT file system  Linux

Directory Structure  Hierarchical tree structure Parent/child relationships

Assignment  Read Chapter 2 – How Software and Hardware Work Together