Module 1.3 Flashcards
memory
- where the computer holds all the programs and data it’s been working on (volatile)
- comes in sticks called DIMMs (dual inline memory modules) that plug into the motherboard
- is more expensive per GB than storage
storage
- where programs and data are kept permanently (non-volatile)
- is either magnetic (HDD), optical (CD,DVD) or electronic (SSD or flash drives)
- operates at a slower sleep than memory
difference between 2.5” and 3.5” hard drives
2.5” get the power they need from your usb port and 3.5” drives need it’s own power supply
advantages of online storage
- accessible from anywhere with internet
- all devices have latest version
- storage provider handles back ups
disadvantages of online storage
- needs internet
- extra storage is paid for
- if company goes bank rupt, you loose everything
what is cloud computing
actual programs run on a server on the internet and you access those programs through your web browser
what’s backing up
making copies of your data and storing it at a different place from your computer
(flash drives, online back up services)
difference between back ups and archives
backing up is making a gimpy and can be scheduled. archiving is storing files that aren’t used regularly (reports)
what do you do when you have a problem with your cd
- make sure it’s clean
* try at a lower speed
formatting and reformatting
preparing a disk to store data, erases all data
disk defragmentation
puts the parts of files back together again and speeds up your computer
disk filling up
deleted temporary files, files from recycling bin, components from windows you’re not using
what is the motherboard
large circuit board that all the components plug into
what is cpu
component that does all the processing (GHz)
dual core and quad core tell you how many cpu’s you have
what is ram
where the cpu fetches instructions and data
