1. RAM (Random Access Memory)

2. Definition  Form of computer data storage  The computer’s short term memory (Disk space is long term)  Computer chips that temporarily store data to enhance computer performance  Uses integrated circuits that allow data to be accessed in any “random” order  Doesn’t matter where data is if its related or not

3. Volatile Memory  Loses contents once power is cut.  Form of electricity while computer is on  Pulls out what it needs at the moment from long term memory  Can be saved when computer is shut down properly.  When computer boots up, RAM fills with programs automatically loaded at start-up

4. Different Types  Architecture and speed  Much faster but more expensive than permanent memory  Must be compatible with motherboard  Newer - Dynamic RAM  Older – Single In-line Memory Modules (SIMMS) or Dual In- Line Memory Modules (DIMMS)

5. Other storage…  Magnetic discs  Optical discs  Flash memory  Rely on physical movement  Longer data transfer and retrieval time  Not as fast as RAM

6. History Early type: magnetic core memory (1949-1952) Used until 1960’s

7. How it works…. http://www.youtube.com/watch?v=DZMIPIVmEcQ

8. Can you install it yourself? http://www.youtube.com/watch?v=atifCDg30xM

9. Can you install it yourself?  Cheap  Anywhere from $14 - $600 depending on what you want

10. Buying it….  Check out consumer reports: http://www.consumerreports.org/cro/electronics- computers/computers-internet/computers/computer- buying-advice/computer-features/laptop-features.htm Easiest way: www.bestbuy.com Best Buy In-Store ($36.99 - $499.99)

11. Sources  http://en.wikipedia.org/wiki/Random-access_memory http://en.wikipedia.org/wiki/Random-access_memory  http://www.wisegeek.com/what-is-random-access- memory.htm http://www.wisegeek.com/what-is-random-access- memory.htm