Computer System OVERVIEW

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Computer System - OVERVIEW
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Reference Giesecke et al. Chapter 2
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Parts of a Computer System

• CPU
• Input
• Output
• Storage Devices
• Operating System
• Software

(latest processor)
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CPU

• Central Processing Unit receives data and manages
  and controls the functions of the CAD system.
• It is analogous to a humans brain, which
  interprets data and controls motor functions.

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CPU Timeline

• 48 Transistor (Bell Labs)
• 70s CPU (Intel) Birth of PC
• 70s Present Dramatic increase in
  processor speed (Moores Law)

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Input Devices

• Keyboard
• Mouse
• Digitizer
• Trackball
• Light Pen
• Touch Screen
• Voice

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Keyboard
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Mouse
Middle Button can be rolled or clicked,
depending on the software
Left Button select entity, menu selection,
icon, etc.

• Right Button sometimes works like the Enter key
  and sometimes displays a short cut menu

Mouse Pad
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Output Devices

• Monitors
• Printers
• Plotters
• Machining Centers
• Rapid Prototyping
• Other Software Packages, such as ANSYS and Mold
  Flow!

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Output Devices contd. Printer
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Output Devices contd. Manufacturing
CAD Model
Import into CAM package
Haas VF-11/50 Vertical Machining Center (30 hp
spindle w/ 120 x 40 x 20 travel)
Haas Mini Mill(7.5 hp spindle w/ 16 x 12 x
10 travel)
Post Process
Source http//www.haascnc.com
Download g-code into machine tool
Mori Seiki SL-603 Turning Center
Mori Seiki SL-154 Turning Center
Source http//www.moriseiki.com
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Output Devices contd. Rapid Prototyping w/ 3D
Printer
CAD Model
Import into 3D printer as STF file
Produce physical prototype (starch/plaster)
Source Z-Corp http//www.zcorp.com/
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Storage Devices

• Fixed disk drive or hard drive (up to 120 GB)
• Floppy disk drive (1.44 MB)
• USB (64 MB 512 MB)
• CD-ROM drives (800 MB)
• Server (P drive)
• Optical drives (1 GB)
• Magnetic tape (1 GB)
• Zip drives (100 MB)
• Super Disk (120 MB)

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Storage Devices contd.
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Access Storage Devices
Start Search For Files or Folders Folders
button
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Operating System

• An operating system is a set of instructions that
  control the operation of the computer and its
  peripheral devices.
• Operating systems control the execution of
  specific program.
• Operating systems provide support for activities
  like input and output (I/O)
• Examples Windows XP, 2000 or NT, UNIX, OS2, Linex

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Stand Alone vs Networked

• Stand Alone Networked

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Stand Alone

• A self sufficient computer
• All software must be loaded onto hard drive or
  run off a floppy.
• Printer, scanner, etc., connected directly to
  computer.

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Networked

• Behrend Computer Labs
• Multiple computers connected to one central
  location by cables, routers, etc.
• One copy of the software on the server.
• Site license controls number of copies that may
  be downloaded at one time.
• Initial software downloads times may take up to
  40 minutes depending on the software
• May connect to a printer in any computer center
  lab
• Store data (your files) on computer center
  server, i.e., your P drive. Freshman allocated
  10 MB.