Term
| Random Access Memory types |
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Definition
SRAM DRAM SDRAM DDR-SDRAM |
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dynamic ram requires a signal to remind the memory of the data it is holding
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| how quickly data can be moved into and out of the memoy |
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| the form factor the memory uses |
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Error Correction Code – it can detect and correct errors in the data being read from the memory
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Registered Memory Buffered memory Cannot mix with unregistered type Required for dual CPU High Cost |
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Static Random Access Memory
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requires four to six transistors for each bit of data Example for 256KB of cache (SRAM).
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Dynamic Random Access Memory Cost Efficient Requires a refresh signal Uses one capacitor and one transistor to hold a bit of data
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| Double Data Rate Random Access Memory |
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| Set standards for DDR speeds. |
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| Chipset that doubles memory bandwidth |
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Read Only Memory Non-Volatile – will retain data even when power is removed Expensive |
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| Programmable Read-Only Memory |
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Magnetic Storage Hard Drives Optical Storage DVD & CD Drives Floppy Drives |
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Non-magnetic platter Floppy Disk - Mylar Hard Disk - Metal, Ceramic, or Glass |
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Definition
Magnetic material added Coat with a thin layer of magnetic domains |
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Definition
Magnetic Storage Tracks - concentric rings on the platter Double Side – use both sides of the platter |
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| Magnetic Storage Cylinder |
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Definition
| all the same number tracks on all the platters treated a one |
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| dividing up the tracks in small sections |
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The smallest unit of storage on a disk. 512 bytes Grouped into clusters |
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Cluster: The smallest unit of disk space that the OS can allocate to a file. 2 or more sectors
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| Concentric Rings on a hard disk |
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| FAT(Windows 3X, 9X and ME) NTFS(Windows NT, 2000, XP, Vista) HFS(MAC OSX) |
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Divides the physical hard disk into logical sections The order Partition Format Load OS |
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Hard Drives ATA66 ATA100 ATA133 |
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Exsternal connection for sata drive allows externl drive to prefprm at the same or simulare specs to internal drives
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| High Speed Parallel data transfers |
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| Allows for several small disks to act as one big hard drive |
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| The fastest and most efficient array |
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DVD and CD they use a laser diode to read pits and land on the DVD/CD Currently they are the slowest of our storage media. |
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| Internal Peripheral Sound Cards |
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Definition
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| External Peripheral Sound Card |
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Definition
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| External Peripheral Sound Cards |
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Definition
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Definition
| Combines tones at varying frequencies to approximate a particular sound |
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| Uses small samples of actual instruments |
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Definition
Offers the ability to stay digital
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Full Duplex Sound can play and record at the same time
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Definition
Analog Signal A continuous wave that can hold an infinite amount of data, all sound in the natural works is analog. |
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Definition
the height of the wave represents the intensity or volume of the signal
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| the number of cycles per second that the wave repeats |
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Analog to Digital Converter
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| Digital to Analog Converter |
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Sample Rate + Sample Precision = Resolution
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Quantization records an amplitude value for each sampled point.
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