1. CPU RAM IO USB SSD GPU DIM MHZ GHZ HARDWARE http://www.flickr.com/photos/hape_gera/

2.  A computing system is composed of  hardware: the physical components of the system  software: the “instructions” that control the hardware  Hardware components include:  Motherboard  Central processing unit (CPU)  Memory (RAM / Drives)  IO Devices  Video Card  Sound Card  Network Card  Light cycles  Are not part of a computing system. 2 COMPUTING SYSTEMS

3. 3 COMPUTING SYSTEM CPU

4. 4 HARDWARE: MOTHERBOARD http://en.wikipedia.org/wiki/Image:ASRock_K7VT4A_Pro_Mainboard.jpg

5.  Central Processing Unit  The ‘brains’ of the system  An electronic chip that performs instructions  A CPU can only do a few simple things:  Can add/subtract/multiply/divide two numbers  Can compare two numbers to see if one is smaller/larger  Can copy/move data from one place to another  CPU’s appear more powerful than this since these tasks are done very quickly 5 HARDWARE: CPU http://www.flickr.com/photos/superdeathsquid/490987592/sizes/z/in/photostream/

6. 6 REPAIRING A COMPUTER

7.  AMD quad-core Opteron  Actual size is about the size of your thumb 7 HARDWARE: CPU

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9. 9 http://www.flickr.com/photos/ehecatzin/71173187/in/photostream#preview http://biorobots.cwru.edu/server/howto/buildcomp/mountcpu/

10. 10 HARDWARE: CPU http://biorobots.cwru.edu/server/howto/buildcomp/mountcpu/

11.  All information needed for computing must be “storable”  The instructions that a CPU must perform  The data that the CPU requires as input  The data that the CPU generates as output  Computer storage (or memory) is used to “remember” these things 11 HARDWARE: STORAGE

12.  All data is stored in binary form  The smallest binary datum is a bit (off / on)  Eight bits is a byte  Storage capacity is usually specified as the number of bytes the device can remember. 12 HARDWARE: STORAGE

13.  Denote an ‘on’ switch as ‘1’  Denote an ‘off’ switch as ‘0’  How many different patterns can you have with 2 bits?  How many different patterns can you have with 3 bits?  How many different patterns can you have with 8 bits?  How many different patterns can you have with N bits?  What does each pattern mean?  Could mean colors  Could mean people  Could mean numbers  Could mean characters 13 BINARY THINGS

14. Understanding Computer Storage Name Size Enough Raw Capacity For… NormalCS Byte11A single character KiloByte10 3 2 10 Half of a typewritten page MegaByte10 6 2 20 A short novel or single low-res photo GigaByte10 9 2 30 A symphony in hi-fidelity sound or a truck full of paper TeraByte10 12 2 40 One-tenth of the printed texts in the Library of Congress PetaByte10 15 2 50 450,000 hours of TV or all email produced worldwide in a single day ExaByte10 18 2 60 Two exabytes is estimated to be all information generated worldwide in a single year. Five exabytes is all the words ever spoken by human being 14 http://news.com.com/Big+storage+on+the+cheap/2100-1015_3-5808754.html

15.  RAM (Random Access Memory)  PCs typically range between 4 to 64 Gigabytes of RAM 15 HARDWARE: RAM http://en.wikipedia.org/wiki/Image:RAM_n.jpg

16. 16 HARDWARE: DISK DRIVE http://www.flickr.com/photos/jpstanley/74574509/in/photostream/ Data is stored by magnetically charging “bits” on a rotating disk. The “bits” are read/written by a sensor Access is slow since the head (the sensor) must be mechanically moved to the location of the bit on the disk PC typically comes with about a 500-1000 GigaByte disk

17.  Data is stored by charging small-scale “batteries” on the device.  Most flash drives have a capacity of 8-128 Gigabytes 17 HARDWARE: FLASH DRIVE