Hello friend ..
today i say u some Intresting Fact about computer
Just Follow:-
*HARD DISK*
@ The magnetic HDD is 55 years old . In 1956 IBM introduced 305 RAMAC (random access method of accounting and control), which is like the great-great-great grandfather of today’s disks. It was the size of a refrigerator, and stored a total of 4.4 megabytes on 50 doubled-sided, two-foot-diameter disks. The disk had a density of 2,000 bits of data per square inch and had a purchase price of $10,000,000 per Gbyte.
@ Today’s laptop drives are typically 2.5 inches and are a size of a deck of cards, and can store upto 160 gigabytes – or 131 billion bits per square inch. Price is less than $1 per gigabyte.
@ In the U.S. alone, $600 million worth of external hard drives were sold in 2006, up 53% from 2005, The NPD Group, a market research firm, says. (NYT)
today i say u some Intresting Fact about computer
Just Follow:-
*HARD DISK*
@ The magnetic HDD is 55 years old . In 1956 IBM introduced 305 RAMAC (random access method of accounting and control), which is like the great-great-great grandfather of today’s disks. It was the size of a refrigerator, and stored a total of 4.4 megabytes on 50 doubled-sided, two-foot-diameter disks. The disk had a density of 2,000 bits of data per square inch and had a purchase price of $10,000,000 per Gbyte.
@ Today’s laptop drives are typically 2.5 inches and are a size of a deck of cards, and can store upto 160 gigabytes – or 131 billion bits per square inch. Price is less than $1 per gigabyte.
@ In the U.S. alone, $600 million worth of external hard drives were sold in 2006, up 53% from 2005, The NPD Group, a market research firm, says. (NYT)
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