Storage

Storage

1. RAM

   • RAM is volatile.
     • This means that when the computer shuts down the memory is cleared.
   • Random Access Memory
     • The RAM only stores the data of open software, this is why it's cleared when the computer shuts down.
     • the RAM is the computer's short term memory.
   • The CPU can edit as well as read the RAM.
   • The modern type of RAM usually stores between 4-16 GB of data.

2. ROM

   • Read Only Memory
     • This is the computer's long term memory.
   • It's non-volatile.
     • This means that when the computer shuts down, its memory isn't lost (this is because it also includes how to turn on the computer).
   • This type of memory can't be edited, this is why it's called "Read Only Memory".
   • This memory stores the BIOS

3. Optical

   • It's small, this makes it easy to carry.
   • Lasers read the data.
   • It's a disk (like a DVD or CD).
     • It's very easy to scratch

4. Solid State

   • It's the best secondary storage.
     • This is because it doesn't contain any moving parts, this makes it durable.
   • Most expensive.

5. Hard Disk

   • It has moving parts which rotate at 120 times a second; this makes it extremely easy to damage.
     • Even touching it can break it.
   • It's extremely cheap because it isn't durable.
     • nevertheless it has the biggest storage.