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Computer%20Technology

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Lesson 1 Computer Technology Changes in Computers over the Past 50 years Computers are SMALLER From room size to pocket size Computers are FASTER Billions of cycles ... – PowerPoint PPT presentation

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Title: Computer%20Technology


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.

4
(No Transcript)
5
What trends do you see for the future?
6
Speed
  • Measured in Hertz
  • Megahertz (MHz) millions of cycles per second
  • Gigahertz (GHz) billions of cycles per second

7
SizeMeasuring Storage and Memory
  • Bytes
  • Kilobyte One Thousand Bytes
  • Megabyte One Million Bytes
  • Gigabyte One Billion Bytes
  • Terabyte One Trillion Bytes
  • approximately

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

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
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