1. Computer System - OVERVIEW
7/25/03
Computer System - OVERVIEW
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Reference: Giesecke et al. Chapter 2
Introduction to Computer Systems

2. Parts of a Computer System
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Parts of a Computer System
CPU
Input
Output
Storage Devices
Operating System
Software
(latest processor)
Ask them – what is the latest CPU? Changes constantly – then click on link
Introduction to Computer Systems

3. 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

4. CPU – Timeline ’48 –Transistor (Bell Labs)
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CPU – 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
Introduction to Computer Systems

5. Input Devices Keyboard Mouse Digitizer Trackball Light Pen
Touch Screen
Voice

6. Keyboard ESC – Escape key CTRL – Control Key ALT – Alt 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

7. 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

8. Output Devices Monitors Printers Plotters Machining Centers
Rapid Prototyping
Other Software Packages, such as ANSYS and Mold Flow!

9. 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

10. Output Devices cont’d. Manufacturing CAD Model Import into CAM package
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Output Devices cont’d.
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)
Talk about how machine shops have saved time and money by CAD/CAM. How were parts made in the old days – before CAM, before CNC??
Post Process
Source:
Download g-code into machine tool
Mori Seiki: SL-603 Turning Center
Mori Seiki: SL-154 Turning Center
Introduction to Computer Systems
Source:

11. Rapid Prototyping w/ 3D Printer
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Output Devices cont’d.
Rapid Prototyping w/ 3D Printer
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
CAD Model
Import into 3D printer as STF file
Talk briefly about Dave Forsman’s Course METBD 410 (ref link above). Adv of rapid prototype? Facilitates design iterations (form and fit only).
Produce physical prototype (starch/plaster)
Introduction to Computer Systems
Source: Z-Corp

12. Storage Devices Fixed disk drive or hard drive (up to 120 GB+)
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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)
Introduction to Computer Systems

13. Storage Devices cont’d.
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Storage Devices cont’d.
Floppy Drive
CD ROM Drive
Memory Stick in USB port
Introduction to Computer Systems

14. Access Storage Devices
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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
Introduction to Computer Systems

15. 7/25/03
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
Talk about how important it is for engineers to not only know CAD package but basic operating system as well. Example: file management and organization is extremely important. Wasting time searching for files is non value-added time!!
Introduction to Computer Systems

16. Stand Alone vs Networked
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Stand Alone vs Networked
Stand Alone Networked
Introduction to Computer Systems

17. Stand Alone A self sufficient computer
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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.
Introduction to Computer Systems

18. Networked Behrend Computer Labs
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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.
Introduction to Computer Systems