Memory - RAM, ROM Drew Crow, Tim Cobb


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Memory - RAM, ROM Drew Crow, Tim Cobb

  1. 1. Hardware: Memory (Random Access, Read Only)<br />Drew Crow & Tim Cobb<br />
  2. 2. Random Access Memory (RAM)<br />Temporary memory that stores bytes of data and program instructions for the processor to access.<br />Primary storage area in a computer for programs and data.<br />
  3. 3. Random Access Memory (RAM)<br />Too little or too low quality RAM can result in poor computer performance.<br />RAM is installed in a computer to match the computer processor’s abilities.<br />Most operating systems require at least 1 GB to run smoothly.<br />
  4. 4. Random Access Memory (RAM)<br />The CPU, or computer processing unit, works closely with the RAM to run software applications.<br />RAM capacities in new computers range from 1 GB to 4 GB.<br />Front side bus (FSB) consists of electronic pathways that connect the CPU and the RAM.<br />
  5. 5. Random Access Memory (RAM)<br />Made up of sets of chips grouped together on a circuit board.<br />Single in-line memory module (SIMM)<br />Dual in-line memory module (DIMM)<br />Most modern PCs use DIMM, because it has a 64 bit data path, twice the amount of a SIMM.<br />
  6. 6. Random Access Memory (RAM)<br />New computers typically have two of the four RAM slots occupied by DIMMs, with the remaining two left for added memory expansion.<br />Located in slots in the motherboard near the CPU.<br />
  7. 7. Types of RAM<br />DRAM, SDRAM, RD-RAM, DDR-SDRAM, FPMRAM, EDO-RAM, BEDO-RAM.<br />Each type of RAM is a newer faster upgrade of the previous version.<br />Today’s Computers use DDR-SDRAM, DDR2 SDRAM, DDR3 SDRAM.<br />DDR2 doubles speed of DDR, DDR3 doubles it again.<br />
  8. 8. Determining Your RAM<br />First, you need to know your computer’s memory type, and the speed you need.<br />There are two ways you can determine this:<br />Opening up your computer, <br />and physically looking inside.<br />Downloading a program to <br />search for that information.<br />
  9. 9. How to Upgrade Your RAM<br /><ul><li>If you have an empty RAM slot on your motherboard, you can purchase another and add it. </li></ul>You need to know your computer’s capacity, so that you do not put in more memory than it can hold.<br />If it is already filled to capacity, you need to remove one and replace it with a bigger memory module.<br />
  10. 10. How to Upgrade Your RAM<br />Let’s say your Notebook has two 256 MB modules.A total of 512 MB of RAM<br />If you replace both 256 MB modules with two 512 MB modules, you would now have a 1,024 MB of total memory.<br />
  11. 11. Read Only Memory (ROM)<br />Provides permanent storage for data and instructions that do not change, such as firmware.<br />Firmware is programs and data from the computer manufacturer, including the boot process used to start the computer.<br />
  12. 12. Why You Need ROM…<br />The processor (CPU) and RAM need electricity to store data. Both are wiped clean when a computer powers down.<br />The computer needs somewhere to permanently store instructions need to boot up the computer and load operating systems into RAM.<br />
  13. 13. Read Only Memory (ROM)<br />Stores data using circuits with states that are fixed, they don’t get erase when computer is shut down.<br />The basic function of ROM is to store necessary software components that open programs so that you can access the RAM.<br />
  14. 14. Basic Input/Output System (BIOS)<br />One program that ROM stores is the BIOS program.<br />BIOS stores information about your hardware configuration along with the boot program.<br />The boot program contains instructions necessary to start up your computer.<br />
  15. 15. Basic Input/Output System (BIOS)<br />After system diagnostics, boot program loads parts of the operating system from the ROM to the RAM.<br />Modern computers use flash BIOS, it has been recorded on a flash memory chip.<br />
  16. 16. RAM Recap<br />Temporary type of memory.<br />Made up of tiny electrical charges held in capacitors, making RAM fast and flexible.<br />RAM cannot store information without constant electric flow.<br />
  17. 17. RAM Recap<br />If your computer is running programs slowly, you may need more RAM.<br />Can always upgrade RAM, specific to your system.<br />There is always newer and faster RAM being developed<br />
  18. 18. ROM Recap<br />Permanent type of memory.<br />Stores instructions necessary for your computer start up and operate.<br />BIOS is a large program stored by ROM, that stores information about hardware configuration and the boot program.<br />
  19. 19. THE END<br />THANKS FOR LISTENING<br />
  20. 20. Bibliography<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />