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://www.wisegeek.com/what-is-random-access-memory.htm