1. Integrated Technology
Unit 2- Computer Hardware

2. Objectives Identify system components
Describe the role of the central processing unit
Define computer memory
Identify types of storage devices
Care for storage media

3. Case
Box that contains components
Tower case
All-in-one

4. Monitor
Displays the images
LCD or LED
Very thin
CRT (old)
Very bulky

5. What Do You Have? Homework: Take a picture of your computer & monitor
With you in the picture
Bring in on your flash drive
Is it a desktop or laptop?
What kind of monitor do you have?

6. Motherboard Circuit board Connects all components Bus Hard drive
Memory
CPU
Bus
Data transfer to components

7. How fast is your computer?- CPU
Processor or “Brain”
Reads/interprets instructions
Performs calculations to complete tasks
Speed= Gigahertz (GHz)
2.2Ghz
3GHz
1979= 8 MHz
1993= 200 MHz
2013= 3 GHz
Millions or billions of instructions per second
Intel or AMD brands

8. How much memory ?- RAM Active programs/data are held
Stores what you are creating
“Short-term memory”
Disappears when computer is off
Measured in bytes
Gigabytes (GB)
4GB-8GB is standard now
Explain: Typing up a paper and you copy a picture from the Internet. It puts it in temporary memory (RAM). If you copy a picture and shut the computer off, the next time you turn your computer on, you won’t be able to paste the picture. Stuff in RAM goes away with no power.
More RAM, more things you can do at the same time. Not enough RAM, slows down!

9. Memory Size 1’s & 0’s Use for storage size Bit= a 1 or a 0
Hard drive, RAM, CD/DVD
Bit= a 1 or a 0
8 bits = 1 byte (a letter or number)
KB= 1024 bytes
MB= Million bytes
GB= Billion bytes
TB= Trillion bytes
1’s & 0’s are really +5v and 0v of electricity.
Link takes you to a text to binary converter. See what your name would be in binary.

10. What Do You Have?
Start, Control Panel, System

11. How does your computer boot?- ROM
BIOS or ROM
On motherboard
Has instructions to boot your computer
Read only- no store data
Info stays when power is off

12. Boot Process Power on the PC ROM BIOS checked for location of OS
Usually on the hard drive
Loads OS from hard drive into RAM
OS Starts
You log in

13. Review What speed is a CPU measured in?
GHz
Which memory holds your active, running programs or what you copied?
RAM
Which type of monitor is shown?
CRT

14. Review Which memory goes away when power is off?
RAM
What holds the computer’s boot instructions?
BIOS ROM
What is the brains of a computer?
CPU- what does it stand for?
The CPU, RAM, and ROM are all on what component?
Motherboard

15. Storage Device- Hard Drive
Store data permanently
Long-term storage
GB or TB
320GB
1TB
Inside Case
External HD
USB
Open Word- Word is stored on the hard drive. When you open it, it goes from HD to RAM to run.

16. Storage Device- Optical
Optical uses a laser to read/write data
CD or DVD-ROM= Read Only
CD or DVD-R= Record Once
CD or DVD-RW= Rewritable
CD= 80 min./ 700MB
DVD= 2 hrs./ 4.7GB
BD= 4.5 hrs. of HD/ 25GB

17. What Do You Have? Size Hard Drive: Type of Optical Drive:
Start, Computer, right- click on C:
Type of Optical Drive:
Take a picture of front

18. Storage Device- SSD No moving parts inside SSD HD Memory Cards
In thin laptops
Memory Cards
SD, SDHC, microSD, CF, Memory Stick
USB Flash drive
Handout with flash memory cards to ID.

19. Storage Device- Floppy Disks
8-inch ¼” ½”
Magnetic Storage- 3.5”=1.44MB

20. Caring for Storage Media
Keep magnetic devices away from TV’s & monitors
Have magnetic fields; may erase
Avoid extreme temps
Like in a car
Hold optical media by edges
Keep discs in sturdy case
Demonstrate how to hold a CD.

21. Types of Computers Project
In groups of 2, make a poster…
Title of device
Big picture of device
It’s use & where it’s used
Cost ($, $$, $$$, $$$$)
Special Features
Desktop
Laptop/Notebook
Netbook
Tablet
Workstation
Servers
Smartphone
GPS
Music/Media Player
Game System
E-Book Reader

22. Review
T/F. Hard drives are used to temporarily store what you are creating.
False
Which removable storage would you use to copy pictures from one PC to another? Flash Drive, Memory Card, Floppy, or Ext. HD
Flash, Mem Card, or Ext HD
Which optical storage would be used to store music and then later erased to store photos?
CD-RW

23. Review How much data can a Blu-Ray DVD hold?
25GB
If pictures are about 3MB each, how many pictures could you put on that disc?
About 8300!
Which storage device has no moveable parts?
SSD/Flash

24. Review 2

25. Integrated Technology
Unit 2- Computer Hardware