A Peek inside a PC; Hardware Show 'n Tell
Tom Kelliher, CS 102
Apr. 20, 1998
Announcements: Web page and quiz grades, project discussion Wednesday.
From last time:
- Introduction to computer hardware; buying a PC.
- Computer hardware show 'n tell.
- Inside a PC.
- Computer chips: carrier, I/O pins, die.
- Hard disk
- Platters: coated with iron oxide. Magnetized to store data.
- Read/Write heads: fly over platters. Move back and forth to
- Cylinders, tracks, sectors.
- Other storage media: floppies (8'' 5.25'', 3.5''), ZIP disk, QIC
tape, DDS tape.
- An expansion card: modem.
- Circuit boards.
- Case: desktop, tower.
- Cable connections. Future: Universal Serial Bus. Connections:
- Keyboard, mouse.
- Serial, parallel.
- Taking the cover off.
- Power supply, speaker, drive enclosures (internal, external).
- Expansion bus: ISA, PCI.
- Motherboard: CPU, memory (SIMMs), connectors (IDE, floppy), ROM
- Drives: IDE, SCSI, CD-ROM, floppy.
Working in small groups, visit
, answer the following questions, and post your answers to the class
- Module 2e: How much RAM did a Commodore 64 have? What started the
``RAM race?'' What is SDRAM?
- Module 3a: How many transistors did the 1st generation PC CPUs have?
How many transistors does the 6th generation Pentium II have? What is
cache RAM and why do PCs have one? What was the code name for the
- Module 4b: What was the storage capacity of the first hard disk?
What was its platter diameter? What is the most common platter diameter
today? What is SCSI? What is the maximum capacity of SCSI disks today?
- Module 5a: What is an adapter? What is AGP? What is a PC card?
Thomas P. Kelliher
Sun Apr 19 16:18:48 EDT 1998