logging in or signing up Data Storage JMAN_CSG Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 3063 Category: Education License: All Rights Reserved Like it (5) Dislike it (0) Added: June 27, 2008 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: shivamwe (10 month(s) ago) plz let me download this....my b rother is in first standard and he has got in hhw to make a ppt on data storage,..... it is very clear that a child so, small couldnt make a ppt... so, on his behalf i hav to make this ppt... as i dont have time can i download ur ppt....plz...plz...plz let me do tthis Saving..... Post Reply Close Saving..... Edit Comment Close By: shivamwe (10 month(s) ago) plz let it to be downloaded Saving..... Post Reply Close Saving..... Edit Comment Close By: Knightreign18 (11 month(s) ago) Can I download this? I have no time to make ppt's right now :D Saving..... Post Reply Close Saving..... Edit Comment Close By: fatamtam (12 month(s) ago) nice one , i liked how easy it is :) Saving..... Post Reply Close Saving..... Edit Comment Close By: vooredi (15 month(s) ago) good Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript COMPUTER MEMORY & DATA STORAGE : COMPUTER MEMORY & DATA STORAGE ROM : ROM ROM is short for Read Only Memory. It is permanent, long-term memory which cannot be erased or changed in any way; It is also known as “Non-Volatile Memory” because it doesn’t disappear after the computer is switched off. ROM cont’d : ROM cont’d ROM chips instruct the computer how to load the operating system from the hard drive into the computer’s memory. Don’t confuse the hard drive with ROM – the hard drive is an internal backing store (storage device). RAM : RAM RAM (Random Access Memory) is:- Temporary, short-term working memory; Only works when the computer is turned on; It is also known as “Volatile Memory” because data disappears if the power is switched off. Each time you start a program e.g. MS Word, it is loaded into RAM. The amount of RAM influences processing power, speed and how many programs can run at the same time. Many computers are now sold with 128 or 256 MB of RAM. Measurement of Memory : Measurement of Memory Computer memory is measured in bytes. A single byte is made up of a series of 1's and 0's, which are known individually as binary digits or “bits”. This is the way the computer communicates and stores information. With each keystroke or character a byte of memory is used. 8 bits = 1 byte 1024 bytes = 1 kilobyte 1024 kilobytes = 1 megabyte 1024 megabytes = 1 gigabyte Data Storage - Internal Backing Store : Data Storage - Internal Backing Store Hard Disks are the main internal backing store usually found inside computers. The main benefit of hard drives is that they have a large storage capacity – 20 gigabytes or more. (1 Gb = 1024 Mb). External Backing Store : External Backing Store Floppy disks are a common external backing store, however only store up to 1.44 Mb of data. When are they useful? Excellent for transferring small files of data from one machine to another and for backing up important small files stored on your hard disk. External Backing Store : External Backing Store CD-ROM (Compact Disk Read Only Memory) disks are optical disks that use the same technology as musical compact disks. They store up to 700 Mb of data and a laser beam is used to read the data off the disk. What can they be used for? As CD-ROMs are much bigger than floppy disks, they can be used for multimedia applications such as encyclopaedias and can store pictures, sounds and video clips. 3.5 inch Floppy Disk : 3.5 inch Floppy Disk Disk inside plastic case Write Protect Notch Head Contact Area Metal Hub Positioning & Drive Hole Centre Hole You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Data Storage JMAN_CSG Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 3063 Category: Education License: All Rights Reserved Like it (5) Dislike it (0) Added: June 27, 2008 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: shivamwe (10 month(s) ago) plz let me download this....my b rother is in first standard and he has got in hhw to make a ppt on data storage,..... it is very clear that a child so, small couldnt make a ppt... so, on his behalf i hav to make this ppt... as i dont have time can i download ur ppt....plz...plz...plz let me do tthis Saving..... Post Reply Close Saving..... Edit Comment Close By: shivamwe (10 month(s) ago) plz let it to be downloaded Saving..... Post Reply Close Saving..... Edit Comment Close By: Knightreign18 (11 month(s) ago) Can I download this? I have no time to make ppt's right now :D Saving..... Post Reply Close Saving..... Edit Comment Close By: fatamtam (12 month(s) ago) nice one , i liked how easy it is :) Saving..... Post Reply Close Saving..... Edit Comment Close By: vooredi (15 month(s) ago) good Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript COMPUTER MEMORY & DATA STORAGE : COMPUTER MEMORY & DATA STORAGE ROM : ROM ROM is short for Read Only Memory. It is permanent, long-term memory which cannot be erased or changed in any way; It is also known as “Non-Volatile Memory” because it doesn’t disappear after the computer is switched off. ROM cont’d : ROM cont’d ROM chips instruct the computer how to load the operating system from the hard drive into the computer’s memory. Don’t confuse the hard drive with ROM – the hard drive is an internal backing store (storage device). RAM : RAM RAM (Random Access Memory) is:- Temporary, short-term working memory; Only works when the computer is turned on; It is also known as “Volatile Memory” because data disappears if the power is switched off. Each time you start a program e.g. MS Word, it is loaded into RAM. The amount of RAM influences processing power, speed and how many programs can run at the same time. Many computers are now sold with 128 or 256 MB of RAM. Measurement of Memory : Measurement of Memory Computer memory is measured in bytes. A single byte is made up of a series of 1's and 0's, which are known individually as binary digits or “bits”. This is the way the computer communicates and stores information. With each keystroke or character a byte of memory is used. 8 bits = 1 byte 1024 bytes = 1 kilobyte 1024 kilobytes = 1 megabyte 1024 megabytes = 1 gigabyte Data Storage - Internal Backing Store : Data Storage - Internal Backing Store Hard Disks are the main internal backing store usually found inside computers. The main benefit of hard drives is that they have a large storage capacity – 20 gigabytes or more. (1 Gb = 1024 Mb). External Backing Store : External Backing Store Floppy disks are a common external backing store, however only store up to 1.44 Mb of data. When are they useful? Excellent for transferring small files of data from one machine to another and for backing up important small files stored on your hard disk. External Backing Store : External Backing Store CD-ROM (Compact Disk Read Only Memory) disks are optical disks that use the same technology as musical compact disks. They store up to 700 Mb of data and a laser beam is used to read the data off the disk. What can they be used for? As CD-ROMs are much bigger than floppy disks, they can be used for multimedia applications such as encyclopaedias and can store pictures, sounds and video clips. 3.5 inch Floppy Disk : 3.5 inch Floppy Disk Disk inside plastic case Write Protect Notch Head Contact Area Metal Hub Positioning & Drive Hole Centre Hole