1. Classifying & evaluating computers
Unit 4
5-8 days including projects, review, and test.

2. Objectives Identify types of personal computers
Describe desktop computers
Compare laptops and tablets
Evaluate smartphones
Describe servers and other large computers

3. Preparing to Purchase a Computer
Categories of PCs; What do you need to do?
Basic
Internet, , Office docs
Intermediate
Games, video, shopping, Office, design
Advanced
Need max everything
Graphic intensive, online gaming, editing video
What’s your budget?

4. Evaluating Components
Component or Feature
Description
Measured In
What Do You Want?
Fast
CPU Speed
GHz
Memory Capacity
Amount of RAM GB
Storage Capacity
Amount of data you can store
GB or TB
Storage Speed
Read/write access time
RPM
Edit & distribute HD movies
Optical drive
DVD-RW or BD-RE
Display
Size and Type of Screen
Diagonal inches

5. Desktop Computer Personal computer- PC or MAC Individual user
Come in case/monitor or all-in-one
Case is also known as a tower.
Desktop remains stationary.
Easy to open & upgrade.
Typical price is around $400-$1200. All-in-ones with a touchscreen can be around $800.

6. Laptop/Notebook PC or Mac Portability/Battery
Touchpad or Pointing Device
2-in-1 laptop/tablet
May or may not have optical drive
Power is comparable/equal to desktops.
“Greener” than desktops because of power saving features
Difficult to replace parts compared to desktop
Shorter life span than a desktop (mostly because of the battery)
LOOK UP PRICES in weekly ad: Range from $300-$2000.

7. Chromebook Laptop running Google’s Chrome OS Fast boot
Apps instead of software
Cloud-based storage
Use while connected to Internet

8. Tablets PC in smaller size Many functions of PC
Has memory, storage, CPU, touchscreen
Apps, Internet,
Android, iOS, Windows
Choice of WiFi only or Cellular/WiFi
Cell version more expensive & needs data plan
Can use a stylus.
A tablet cannot connect to an Ethernet network.

9. Comparing Laptops & Tablets
Feature
Laptop
Tablet
Input Devices
Battery Life
Storage Capacity
Performance
Physical Size
Price
Have students decide which is better. Use check marks. Discuss why.

10. Smartphones Many features of a computer Install & use apps
Internet, camera, music, GPS, phone, , text
Install & use apps
Touchscreen or keyboard
Windows, iOS, Android
Discuss what to look for in a smartphone:
Touchscreen or physical keyboard, battery life, storage capacity, RAM, size/screen size, price

11. Other Mobile Devices E-book reader Portable music player
Handheld game device
Embedded Oss here

12. Activity
In groups of 2, find a unique device for an iPad

13. Workstation Multiple CPUs, lots of RAM, multiple, high-capacity drives
Video Editing, CAD, Animation, Scientific, CSI, X-Ray

14. Server Performs functions for computers on a network
Provides a service
Hold Files
Handle
Web Site
Runs Network OS
Windows Server, Mac OS X server, Linux Server
Highly reliable & very powerful
Tower, rack & blade servers (not pictured)

15. Mainframe Connected to thin clients/PC’s
Huge amounts of data processing
Process payroll & billing in large companies
Hundreds of thousands $
Large institutions & govt.
Airline flight scheduling
Process payroll & billing for large corporations, handling millions of credit card transactions, gathering & tabulating census info for the government, scheduling flights for an airline.
Kept in secure, climate-controlled rooms.

16. Supercomputers Large & fast Perform BIG calc’s Volumes of data
Millions of $$$
Government
Military
Research Labs
NASA
Can have millions of cores of processors.

17. Review- 4Q
Managing an airline reservation & ticketing system would be best performed by which class of computer?
Mainframe
Which device would animators use to make CG effects for a movie?
Workstation
What is the fastest type of computer?
Supercomputer
Appliances have what kind of computer?
Embedded

18. Review- 4Q What’s the biggest advantage of using a notebook?
Portability
T/F. A server is dedicated to sharing resources & data.
True
Which type of computer provides services to other PCs?
Servers
What device would have Android OS on it?
Smartphone or Tablet

19. Activities Project 1 Project 2
In groups of 3 or 4, compare smartphones
Make a table to include the data
Include a picture of each phone
Project 2
Buy a computer
Individual project

20. Classifying & evaluating computers
Unit 4
5-8 days including projects, review, and test.