What is Hard disk

Hard drive is a secondary storage device where data is stored as magnetic pulses on a rotating metal disc that is integrated. Data is stored in concentric circles called tracks. Each track is divided into several segments, known as sectors. To perform read and write data operations to and from the disk, hard disk using the head to do it, who was in every dish. Head is the next move looking for sector-specific sector to be operating against him. The time required to find the sector is called seek time. After finding the desired sector, the head will rotate to look for tracks. The time required to find the track is called latency.

Hard drive storage media which is designed to be used to save data in a large capacity. This background of the application programs that are not allowed to be in a diskette and also require large file storage media such as an agency database. Not only that, the hard drive is also expected to offset the speed of access. Hard drive speed when compared with ordinary floppy, so far. This is because hard drives have different mechanisms and materials technology which of course is better than regular floppies. If no hard drive, can imagine how much that should be provided to store data of any public employee or store application programs. This is certainly inefficient. Plus the reading time is very slow when using the conventional disk storage media.History of Hard Disk

 Harddisk at the beginning of its development is dominated by giant companies that became the standard computer that is IBM. Ditahun following years show other companies such as Seagate, Quantum, Conner to Hewlett Packard's in 1992. Initially, the technology used to read / write, the head read / writes and penyimpannya metal disc touching each other. But at this moment this is avoided, because the disk rotational speed is high, touch the metal plate it will damage the physical storage of these discs.hd1.jpgFigure 1: Evolution of Technology According to IBM's Notebook

What the mean RAM

RAM stands for Random Access Memory used by the computer as a temporary workplace. Processor to move data and applications from being processed as a permanent repository or optical disk into the RAM of storage devise. Processors akanmenjalankan existing applications and data from this temporary storage. Any new data that will be created and stored temporarily in memory before being stored permanently on your hard disk. Each byteinformasi used by the computer during a memory operation will go through during the journey either from or to the 1 / 0 devices, proseseor or hard disk.VS DDR2 DDR

Present as a complement to his true DDR2 chipsets feature the latest keluaranIntel. DDR 2 (DDR read both genres) than its predecessor runs with a lower voltage to reduce heat and increase the capacity of chips to boost capacity memory module. Also DDR 2 is also designed with a larger size 240 pins compared with only 184 pin DDR. This is affecting the size of existing socket in center penyanggayang memory.

Chelsea FC is the first team on BPL tables

Chelsea FC the most successful team in the first five weeks in BPL, Chelsea has been bagging 15 points from five matches and create results cleansheet point. And they've put the ball as much as 21 goals and only conceded one goal. And Chelsea are also sending two players that is Didier Drogba, who scored five goals in the third position in the BPL's top scorer during the first five weeks and Florent Malouda with six tally at the top along with Dimitar Berbatov.core playerGK: Petr CechCB: John TerryCB: AlexRB: Branislav IvanovicLB: Ashley ColeCMF: Frank LampardRMF: RamiresLMF: Florent MaloudaRWF: Nicolas AnelkaLWF: Salomon KalouCF: Didier Drogba

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