Technology Education THE PERSONAL COMPUTER (PC) HARDWARE PART 4

Purpose Of Lesson Part 4 1.To teach students the basic internal computer system components(hard parts) and their functions. 2.To teach students the different types of storage medias used with computers and their sizes.

Different Compact Discs There are half a dozens of different types Not all will play in all machines You need to know what to BUY!! WARNING THIS WILL BE THE HARDEST ASSIGNMENT IN THIS CLASS THIS YEAR!!!

DIFFERENT DISCS CD CD-R CD+R CDRW DVD DVD-R DVD+R DVDRW DVD DUAL LAYER HYBRID HD DVD BLU RAY BLU RAY-R BLU RAY RW BLU RAY DUAL LAYER BLU RAY 3XL 4XL

CD COMPACT DISC HOLDS 700MB OF INFORMATION – IT CAN ONLY BE READ (READ ONLY)!!!! REPLACED TAPES AND RECORDS MADE LIKE A VINYL RECORD STAMPED OUT LAST LONGER

CD-R CD-R once written–BECOMES A READ ONLY DISC HOLD 700MB CD-R WAS THE FIRST FORMAT AVAILABLE DOESN’T LAST AS LONG AS REGULAR CD (SO BE CAREFUL ABOUT BACKING UP IMPORTANT DATA ON THEM!)

CD+R CD+R once written–BECOMES A READ ONLY DISC HOLD 700MB CD+R CAME OUT TO FIX SOME PROBLEMS WITH CD-R’S NOT ALL PLAYERS/READERS CAN WRITE TO THEM!!!! DOESN’T LAST AS LONG AS REGULAR CD (SO BE CAREFUL ABOUT BACKING UP IMPORTANT DATA ON THEM!)

CD-RW CDRW- MEANS CD READABLE WRITABLE CAN HAVE INFO ADDED TO IT ANYTIME CAN BE REWRITTEN UP TO 1000 TIMES IS MORE EXPENSIVE ALL CAN READ BUT NOT ALL PLAYERS CAN WRITE TO THEM

DVD DVD+R HOLDS 4.7Gigabytes (4,700MB) CAN HOLD INFO CAN HOLD MOVIES HAS TO BE DVD ROM PLAYER OR BETTER TO PLAY MADE LIKE A VINYL RECORD STAMPED OUT – LASTS LONGER THAT WAY!

DVD-R DVD-R once written READ ONLY- 4.7Gigabytes (4,700MB) CAN HOLD INFO CAN HOLD MOVIES ALL PLAYERS CAN PLAY ALL WRITERS CAN WRITE DOESN’T LAST AS LONG AS REGULAR CD (SO BE CAREFUL ABOUT BACKING UP IMPORTANT DATA ON THEM!)

DVD+R DVD+R once written READ ONLY- 4.7Gigabytes (4,700MB) CAN HOLD INFO CAN HOLD MOVIES ALL PLAYERS CAN PLAY HAS TO BE A DVD+R TO WRITE!!!! DOESN’T LAST AS LONG AS REGULAR CD (SO BE CAREFUL ABOUT BACKING UP IMPORTANT DATA ON THEM!)

DVDRW DVD READABLE WRITABLE CAN BE REWRITTEN UP TO 1,000 TIMES HOLDS 4.7Gigabytes (4,700MB) HAS TO BE DVDRW PLAYER TO REWRITE!!! DOESN’T LAST AS LONG AS REGULAR CD (SO BE CAREFUL ABOUT BACKING UP IMPORTANT DATA ON THEM!)

DVD (Dual Layer) (TWO HALF THICK DISCS GLUED TOGETHER) Also called Multi-Disc 8.5GB or 8,500MB Can only play or write in Dual Layer Player and/or Writer!!! DOESN’T LAST AS LONG AS REGULAR CD (SO BE CAREFUL ABOUT BACKING UP IMPORTANT DATA ON THEM!)

HYBRID COULD BE PART CD AND PART DVD COULD BE PART DVD AND PART DVDRW COULD POSSIBLY HOLD UP TO 4.7GB. BUT MOST DON’T USED FOR VIDEO GAMES AND SOFTWARE WHERE THE DISC HAS TO BE LEFT IN AND INFORMATION CAN BE SAVED! LIKE GAME PROGRESS!

HD & Blu-Ray HD DVD disc can hold UP TO 30 GB On February, Toshiba announced that HD DVD format would be discontinued. (SO DON’T BUY IT!!!) Blu-Ray is now set to become the new High Definition DVD format. Can only play in Blu-Ray and/or Writer A TRIPLE LAYER Blu-Ray disc can store UP TO 128 GB – (128,000MB)

Blu-Ray Can be Read Only Stamped out lasts longest Can be burned just like CD’s and DVD’s but they don’t last as long. Can be Burnt Once Available in Readable Writeable Of Course the player and/or writer must match the Disc type just like with DVD’s and CD’s.

Blu-Ray Can be a single layer 25 GB Can be a dual layer 50 GB IT IS ALSO MADE IN TRIPLE LAYER WITH A 100 GB SIZE A 128 GB QUAD LAYER is now available. Working on next gen already (Rumored to have a 200 GB size

Blu-Ray OTHER SIZES AND NEW SIZES Can be a Blu-Ray mini disc Mini single layer 7.8 GB Mini Dual layer 15.6 GB Can also be made Multilayer Called 3XL 3 layers with 100 GB Also, can be Multilayer Called 4XL with 4 layers and 128 GB A 200 GB & IN RW IS IN THE WORKS!

OPTICAL DRIVE CHART

DIFFERENT DISCS CD CD-R CD+R CDRW DVD DVD-R DVD+R DVDRW DVD DUAL LAYER HYBRID HD DVD BLU RAY BLU RAY-R BLU RAY RW BLU RAY DUAL LAYER BLU RAY 3XL 4XL

END OF PART 4