1. Lesson 1
Computer Technology

2. Changes in Computers over the Past 50 years
Computers are SMALLER
From room size to pocket size
Computers are FASTER
Billions of cycles per second
Computers are LESS EXPENSIVE
Price goes down as technology becomes more available

3. Trends for the Future
Computers will continue to get smaller and faster.
Even more people will have access to computers.
Voice recognition will get better and be used more widely.
Security for computers will be an increasing problem.
The internet will grow even larger.

5. What trends do you see for the future?
Computer technology trends video

6. Speed Measured in Hertz Megahertz (MHz) millions of cycles per second
Gigahertz (GHz) billions of cycles per second
Hertz: video

7. Size Measuring Storage and Memory
Bytes
Kilobyte* One Thousand Bytes
Megabyte* One Million Bytes
Gigabyte* One Billion Bytes
Terabyte* One Trillion Bytes
*approximately
Size: video

8. Internal Storage / Memory
RAM
Random Access Memory
Internal Temporary Storage for Current Application in use
ROM
Read Only Memory
Cannot be altered
External storage
CD & DVD software
RAM: video

9. Computers for: Home and Personal Use Business and Government Use Palm
Laptop
Desktop
Mini
Mainframe
Super computer

10. Palm
Also called:
Handheld
PDA
Cost: $100 - $500

11. Laptop or Notebook
Portable
Cost $1,000 - $3,000

12. Desktop
Also Called
Micro Computer PC
Cost: $500 - $1,500

13. Mini Computer
Sometimes used as a server for a small – medium sized network.
Cost: $10,000 and up

14. Mainframe
Used as a server for medium to large businesses or organizations.
Cost: $100,000 and up

15. Super Computer Largest, most powerful computers used today
NASA
Large Universities
Government
Cost: $ Millions