Y9NS 0.0 / 5 ? ICTData and InformationGCSEWJEC Created by: 28roscoe18Created on: 14-04-21 12:16 Analogue Data Used by humans continuous values 1 of 39 Digital Data used by computers discrete values 2 of 39 Analogue Clocks all values of time 3 of 39 Digital Clock 60 discete values 4 of 39 analogue themometer all values of temp 5 of 39 digital themometer 10 discrete values 6 of 39 weighing scale analogue 7 of 39 guitar analogue 8 of 39 cassette tape analogue 9 of 39 film camera analogue 10 of 39 digital camera digital 11 of 39 smart phone digital 12 of 39 tablet digital 13 of 39 vr headset digital 14 of 39 Binary digits 0 and 1 15 of 39 1 binary a bit 16 of 39 4bits a nibble 17 of 39 8 bits byte 18 of 39 magnetic storage medium digital cassette-tape computer hard drive 19 of 39 common uses of magnetic storage backing up work saving work 20 of 39 amount of storage magnetic average of one tb 21 of 39 positives of magnetic large capacity low cost high speed data recovery random access to data can hold data up to 30 years 22 of 39 negatives of magnetic very slow not as portable hyave mechanical moving parts data can be lost near magnetic fields data isnt accessed fast 23 of 39 magnetic computer hard drives main device all data and software stored on it platter spins thousands of time per second can crash and cause damage 24 of 39 optical storage types DVD Blu-ray CD 25 of 39 optical common uses storing movies/videos copying/moving music files 26 of 39 optical storage single sided dvd - 4.7gb double sided dvd - 8.5gb singe sided blu-ray - 25gb double sided blu-ray - 50gb CD - 700mb 27 of 39 optical positives cheap if less than 10gb is needed portable good for movies/videos not affected by magnetic field 28 of 39 optical negatives not cheap if tb is needed not as portable as flash media (sd) slow to write slow data retrieval easily scratched 29 of 39 solid state types usb sd ssd 30 of 39 storage solid usb max - 1tb common usb - 256tb to 512tb ssd-100tb sd - 2tb 31 of 39 common uses solid usb - transport computer files ssd - used for storage in computers sd - transfer and store photos in digital camera 32 of 39 positives solid faster data retrival large capacity no moving parts vert portable 33 of 39 negatives solid easily lost are expensive dont last as long cost of recovering info is higher 34 of 39 cloud storage google drive apple icloud microsoft one drive 35 of 39 common uses cloud storing school files backing up a computer hard-drive backing up music and photos from phone 36 of 39 storage cloud 5-20gb free as much as you need the more you need the more you pay estimated to have 100,073,741,824gb in 2020 37 of 39 positives cloud data is backed up access files from anywhere data is more efficient 38 of 39 negatives cloud network has to be reliable costs more for morwe data data security is questionable if company goesout of business all data is lost 39 of 39
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