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Computer System - OVERVIEW
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)
CPU
Central Processing Unit receives data and manages and controls the functions of the CAD system.
It is analogous to a human’s brain, which interprets data and controls motor functions.
2000: Pentium® 4 Processor
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CPU – TimelineCPU – Timeline
’48 –Transistor (Bell Labs)
70’s – CPU (Intel) Birth of PC
70’s – Present –Dramatic increase in processor speed (Moore’s Law):
Ted Hoff Inventor
Input Devices
Keyboard Mouse Digitizer Trackball Light Pen Touch Screen Voice
Keyboard
ESC – Escape key
CTRL – Control Key
ALT – Alt key CTRL – Control Key
Function Keys
Backspace – deletes anything to the left of the cursor
Forward Slash
Back Slash
Delete – deletes anything to the right of the cursor
Nums Lock – types numbers when using keypad
Nums Lock, Caps Lock, & Scroll Lock – green light means lock is on
Caps Lock –all letters will be typed as capital letters
Mouse
Right Button – sometimes works like the Enter key and sometimes displays a short cut menu
Middle Button –can be rolled or clicked, depending on the software
Left Button – select entity, menu selection, icon, etc.
Mouse Pad
Output Devices
Monitors Printers Plotters Machining Centers Rapid Prototyping Other Software
Packages, such as ANSYS and Mold Flow!
Output Devices cont’d. Printer
A size paper drawer (8-1/2” x 11”)
On/Off switch on side
B size paper drawer (11” x 17”)
Control Buttons and Prompt Window. To Cancel a job – press the Cancel button.If Offline – press the green button
10Source: http://www.moriseiki.com
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)
Source: http://www.haascnc.com
Mori Seiki: SL-154 Turning Center
Mori Seiki: SL-603 Turning Center
CAD Model
Import into CAM package
Post Process
Download g-code into machine tool
Output Devices cont’d. Manufacturing
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Output Devices cont’d.
Rapid Prototyping w/ 3D Printer
Source: Z-Corp http://www.zcorp.com/
CAD Model
Import into 3D printer as STF file
Produce physical prototype (starch/plaster)
Full Scale Engine Block printed on the Z810 System (18"x19"x13")
Z-Corp, model Z810 System, Build Volume = 20” x 24” x 16”
Forsman’s METBD 410
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)
Storage Devices cont’d.
Floppy Drive
CD ROM Drive
Memory Stick in USB port
Access Storage Devices Start – Search – For Files or Folders… – Folders button
+ Means Collapsed
- Means Expanded
CD ROM Drive
Hard drive
Floppy Drive
P: drive – your personal space
V: drive – courseware Data Disk
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
Stand Alone vs Networked
Stand Alone Networked
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.
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.