logging in or signing up Learn Computer 8315 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: 1335 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: April 27, 2009 This Presentation is Public Favorites: 2 Presentation Description Primary Idea of basic computer Comments Posting comment... By: ashkus (22 month(s) ago) very good and informative thanks Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Computer Systems : Computer Systems Standard Grade Revision Hardware : Hardware Hardware refers to all the parts of the Computer System that we can touch. An item of hardware is called a device. Microprocessor Main memory Input / Output Backing Storage Central Processing Unit : Central Processing Unit CPU RAM Backing Storage Input Output ROM The Processor : The Processor Carries out the actual process Follows a set of instructions called a program INPUT PROCESS OUTPUT Representing Graphics & Text : Representing Graphics & Text Bit-Mapped Graphics Dots called pixels Each pixels is either On (1 – black) or Off (0 – white) Text – ASCII standard file format 0100110101010101010010100101010001000000101000010001000000100001001000101001000000101000101010101010010010100010101010100 = MUJTABA BE QUIET Units of Storage : Units of Storage Main Memory : Main Memory CPU RAM Backing Storage Input Output ROM Main Memory : Main Memory Where the computer stores programs & data Types: RAM Random Access Memory ROM Read Only Memory Main Memory : Main Memory RAM Chip Temporary storage Data is lost when computer switched off Data can be written to RAM Upgrading is easy with RAM Chips ROM Chip Permanent storage Data is safe when computer is switched off Data can not be added to ROM Some OS are stored on ROM Chips Input : Input Input Devices (Navigational) : Input Devices (Navigational) Mouse Trackball Track pad Touch Screen Joystick SmartBoard Input Devices (Data Input) : Input Devices (Data Input) Keyboard Graphics Tablet Scanner Digital Still camera Digital Video Camera Webcam Microphone Backing Storage : Backing Storage Backing Storage : Backing Storage Method used to physically store data. Constantly increasing in capacity to meet demands. Magnetic Storage Floppy disc, Hard Disc, Magnetic Tape Optical Storage CD, DVD Solid State USB Flash Drive Drive or Media : Drive or Media Drive Media Magnetic Storage : Magnetic Storage Hard Disk Drive Usually main type of backing store Non-removable media Floppy Disk Plastic disk with rectangular cover Removable media Magnetic Tape Sequential Access Think VHS tape Removable media Optical Storage : Optical Storage Optical Storage : Optical Storage CD-ROM Read by a laser beam that reflects of surface “pits” and “lands” DVD-ROM Similar to CD but with larger capacity because of multiple layers CD-Recordable (CD-R) / DVD-R Write Once, Read Many CD-Rewritable (CD-RW) / DVD-RW Still uses a laser but contents can be changed USB Flash Drive : USB Flash Drive Universal Serial Bus: Computer interface used by different devices. Solid State Memory No moving parts Advantages Portable Can have large memory (currently 8GB) Flash Memory Cards : Flash Memory Cards Solid State Memory No moving parts Used in cameras and mobile phones Advantages Portable Can have large memory (currently 8GB) Can be read by a card reader Output : Output Output Devices : Output Devices Printer Laser Inkjet Comparison of Printers Resolution Dots Per Inch (DPI) Speed Pages Per Minute (PPM) Cost Capital Cost Running Costs Output Devices : Output Devices Plotter Monitor (VDU) LCD Liquid Crystal Display TFT Thin Film Transistor Multimedia Projector Speakers Types of Computer : Types of Computer Desktop Laptop/Notebook Palmtop Types of Computer : Types of Computer Mainframe You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Learn Computer 8315 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: 1335 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: April 27, 2009 This Presentation is Public Favorites: 2 Presentation Description Primary Idea of basic computer Comments Posting comment... By: ashkus (22 month(s) ago) very good and informative thanks Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Computer Systems : Computer Systems Standard Grade Revision Hardware : Hardware Hardware refers to all the parts of the Computer System that we can touch. An item of hardware is called a device. Microprocessor Main memory Input / Output Backing Storage Central Processing Unit : Central Processing Unit CPU RAM Backing Storage Input Output ROM The Processor : The Processor Carries out the actual process Follows a set of instructions called a program INPUT PROCESS OUTPUT Representing Graphics & Text : Representing Graphics & Text Bit-Mapped Graphics Dots called pixels Each pixels is either On (1 – black) or Off (0 – white) Text – ASCII standard file format 0100110101010101010010100101010001000000101000010001000000100001001000101001000000101000101010101010010010100010101010100 = MUJTABA BE QUIET Units of Storage : Units of Storage Main Memory : Main Memory CPU RAM Backing Storage Input Output ROM Main Memory : Main Memory Where the computer stores programs & data Types: RAM Random Access Memory ROM Read Only Memory Main Memory : Main Memory RAM Chip Temporary storage Data is lost when computer switched off Data can be written to RAM Upgrading is easy with RAM Chips ROM Chip Permanent storage Data is safe when computer is switched off Data can not be added to ROM Some OS are stored on ROM Chips Input : Input Input Devices (Navigational) : Input Devices (Navigational) Mouse Trackball Track pad Touch Screen Joystick SmartBoard Input Devices (Data Input) : Input Devices (Data Input) Keyboard Graphics Tablet Scanner Digital Still camera Digital Video Camera Webcam Microphone Backing Storage : Backing Storage Backing Storage : Backing Storage Method used to physically store data. Constantly increasing in capacity to meet demands. Magnetic Storage Floppy disc, Hard Disc, Magnetic Tape Optical Storage CD, DVD Solid State USB Flash Drive Drive or Media : Drive or Media Drive Media Magnetic Storage : Magnetic Storage Hard Disk Drive Usually main type of backing store Non-removable media Floppy Disk Plastic disk with rectangular cover Removable media Magnetic Tape Sequential Access Think VHS tape Removable media Optical Storage : Optical Storage Optical Storage : Optical Storage CD-ROM Read by a laser beam that reflects of surface “pits” and “lands” DVD-ROM Similar to CD but with larger capacity because of multiple layers CD-Recordable (CD-R) / DVD-R Write Once, Read Many CD-Rewritable (CD-RW) / DVD-RW Still uses a laser but contents can be changed USB Flash Drive : USB Flash Drive Universal Serial Bus: Computer interface used by different devices. Solid State Memory No moving parts Advantages Portable Can have large memory (currently 8GB) Flash Memory Cards : Flash Memory Cards Solid State Memory No moving parts Used in cameras and mobile phones Advantages Portable Can have large memory (currently 8GB) Can be read by a card reader Output : Output Output Devices : Output Devices Printer Laser Inkjet Comparison of Printers Resolution Dots Per Inch (DPI) Speed Pages Per Minute (PPM) Cost Capital Cost Running Costs Output Devices : Output Devices Plotter Monitor (VDU) LCD Liquid Crystal Display TFT Thin Film Transistor Multimedia Projector Speakers Types of Computer : Types of Computer Desktop Laptop/Notebook Palmtop Types of Computer : Types of Computer Mainframe