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The Growth of Hard Disk
Publish Date : 8/20/2007 5:28:00 AM Source : Hardware News Onlypunjab.com
The first hard disk drive on the planet, the r.a.m.a.c (random access memory for accounting and control), was made by IBM in the nineteen fifties. It was as big as a large wardrobe and could contain a capacity of five whole megabytes! The archaic machine cost about fifty thousand US dollars at the time. The price now per gigabyte of memory when talking about hard disk drives less than a dollar, or 1 ten-millionth of what it was sixty years ago. This development rate has proven faster than that of telecommunications data transfer rates and of semi-conductor density increases.
Hard disk drives store their sequence of data bits in linear tracks, which follow around a magnetic disk in concentric circles. In order to fit more data over a smaller area, the gaps between the data tracks must reduce, as well as the spacing between the bits. These dimension quantities are measured in bits per inch (in a circumference-wise direction), and tracks per inch (in a radius-wise direction). These get smaller as the technology gets better; also, one must take into account the tiny areas or gaps between tracks that are there to compensate for a slightly misaligned reader head, so it doesn't read the neighboring tracks.
The method of measuring the total quantity of data storable over a surface area is quantity per square inch, these days, gigabytes per square inch. This measurement is a combination of your bits per inch and tracks per inch. It is known as the areal density. This density has, since that first wardrobe hard drive, had a steady increase at 30 percent per year, and from the early nineties when magneto head resistance was brought about, jumped to 60. Then again in the late nineties, it leaped up to 100 percent yearly increase with the introduction of giant magnet resistance head technology. Now though, the rate of growth has slowed to under 60 percent.
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Samsung Electronics Goes into Mass Production of World's Fastest Memory for Multimedia Applications
Publish Date : 1/25/2005 10:27:00 AM
Samsung Electronics Co., Ltd., the world leader in advanced memory technology, today announced that it has begun mass producing 256Mb XDR(TM) (for "eXtreme Data Rate") DRAM...
Peregrine Semi Promotes Novak to Vice President
Publish Date : 1/19/2005 10:24:00 AM
Peregrine Semiconductor Corporation, a leading supplier of high-performance RF CMOS and mixed-signal communications ICs, today announced the promotion of Rodd Novak ...
O2Micro Granted Continuation of DC/DC Controller Patent
Publish Date : 1/18/2005 11:47:00 AM
O2Micro(R) International Limited (NASDAQ:OIIM), a leading supplier of innovative power management and security ICs to manufacturers of products for the computer...
Casio and Renesas Technology to Collaborate on Semiconductor Device Packaging Technology
Publish Date : 1/18/2005 10:08:00 AM
Casio Computer Co., Ltd. and Renesas Technology Corp. have agreed to an arrangement whereby Casio will license its wafer level package (WLP) semiconductor device ....
IDG's Macworld Announces Best of Show Awards
Publish Date : 1/14/2005 2:21:00 PM
IDG's Macworld, the premier Macintosh magazine and Web sites, today announced the winners of the "Macworld Best of Show Awards," representing the most exciting hardware ....
SigmaTel Hires Vice President of Asia
Publish Date : 1/14/2005 1:37:00 PM
SigmaTel, Inc. (NASDAQ:SGTL), a leader in analog intensive, mixed-signal integrated circuits, today announced the appointment of Jose Lau to the position of Vice President ...
AMI Semiconductor to Announce Fourth Quarter and 2004 Results
Publish Date : 1/14/2005 11:44:00 AM
AMIS Holdings, Inc. (Nasdaq:AMIS), parent company of AMI Semiconductor, will release its fourth quarter and 2004 financial results for the period ending Dec. 31, 2004....
Cascade Microtech, Inc. Announces 2004 Year-End, 4th Quarter Earnings Conference Call
Publish Date : 1/14/2005 10:38:00 AM
Cascade Microtech, Inc. (NASDAQ:CSCD) will release financial results for the Fiscal Year ended December 31, 2004, at approximately 4 p.m. EST, on Tuesday, February 15, 2005.
O2Micro Receives Patent for Trans-impedance Amplifier Invention
Publish Date : 1/13/2005 2:34:00 PM
O2Micro(R) International Limited (Nasdaq:OIIM), a leading supplier of innovative power management and security ICs to manufacturers of products for the computer.....
Samsung GDDR3 Graphics Memory Shipments Meet 2004 Demand Topping 15 Million Units
Publish Date : 1/13/2005 2:04:00 PM
Samsung Electronics Co., Ltd., the world leader in advanced semiconductor memory technology, announced that in 2004 it shipped more than 15 million units of its Graphics ....
Total Results : 19 More News (Opens in New Window) : [1] 2 Next Page
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