1. The Purchase of a PC
Your Name Goes Here

2. 5 Components Microprocessor Internal Memory (RAM) Auxiliary Storage
Input Units
Output Units

3. Microprocessor Brain of the computer Current chips for PC
Intel (Celeron, Pentium III and Pentium IV)
AMD (K-6 and Athlon)
Which do I buy?
Pentium IV or Athlon for graphic intensive programs
K-6 or Celeron for business and Internet browsing

4. Internal Memory (RAM) Temporary (erased when power turned off)
Measured in bytes
1 Byte = 1 character (8 bits)
1 Kilobyte = 210 (~1,000 bytes)
1 Megabyte = 220 (~1,000,000 bytes)
1 Gigabyte = 230 (~1,000,000,000 bytes)
Need Mb of RAM
Want to keep multiple programs & data files in memory
Graphic intensive programs demand a lot of memory

5. Auxiliary Storage (Permanent)
Floppy Disk
Most common is 1.44Mb
LS-120 disk is 120Mb
High Capacity Removable Storage
Zip disks (100 or 250Mb)
Jaz Disks (1 or 2Gb)
Hard (Fixed) Disk
Most common are 10 –30Gb

6. Auxiliary Storage (Continued)
CD-ROM (650Mb)
Recordable devices also available
DVD drives (4.7Gb-17Gb)
ROM and RAM
Higher capacity than CD
Tape Units
Used for large, unattended back-ups

7. Input and Output Units Keyboard Mouse Trackball Scanner Joystick Pens
Ink Jet
B/W or color
Smears
Lasers
Highest quality output

8. Modems/Network Cards Fax/Modem Cable Modem DSL Modem Network Cards
56Kbps/V.90
Cable Modem
Uses TV cable
DSL Modem
Voice and Data on same line
Network Cards

9. Additional Devices Multimedia Other Devices CD ROM or DVD Sound Card
Speakers
Other Devices
Scanner
Camera

10. Purchasing Decisions Local store versus mail order
Magazines
Internet
Use credit card to double warranty
30-day price guarantee
Don’t forget the software
Windows 98 (included) or 2000
Microsoft Office (check the version)