Friday, February 29, 2008


1988: Tandy 1000 TL :

Price: $1400 ($2454 adjusted for inflation)
CPU: Intel 80286
RAM: 640KB
Storage: 3.5-inch floppy
Monitor: 14-inch, 640-by-200 RGB CRT, 16 colors

2008: HP Pavilion Elite m9100z series :
Price: about $1000
CPU: 2.8-GHz AMD Athlon 64 X2 5600+ dual-core
Storage: 750GB HD, CD/DVD recorder
Monitor: 17-inch, 1440-by-900 LCD, 16.7 million colors

By the year 1988, personal computers had found themselves a way into about 15 percent of U.S. house holds. PC's dominated, but other home systems were popular as well among them the Apple II Mac, Macintosh, Commodore 64, Atari ST, and Amiga 2000 etc.
PCs that came with DOS; Windows 2.0 with a $99 option, and one of many competing graphical interfaces were available there. Radio Shack was a home PC central, offering the Tandy 1000 TL for $1400 in a configuration that included a 14-inch, 16-color monitor; 640KB of RAM; and also a single 3.5-inch floppy drive with it.
Tandy's DeskMate graphical interface provided you also an office suite, drawing and sound editing apps, and PC Link online software, a precursor to AOL. The 16 inch color monitor, graphical OS, and multimedia support were some cool cutting-edge in an era still dominated by monochrome monitors and with DOS. But the $1400 price didn't even cover a mouse, a modem, a network--card, or a hard drive, each of which was an expensive add on to it. And CD-ROM drives were extremely rare at that time. Microsoft had just released the first version of it's Bookshelf, a collection of reference materials on the CD-ROM in September 1987, and it would be another couple years before the CD ROM format really took off.
The situation in 2008 almost defies a comparison with 1988. Instead of conserving RAM and disk space like the gold and diamonds, we store our entire lives on our hard drives and expect our PCs to double as the home entertainment centers. For a total price of $1000, the HP Pavilion Elite m9100z is available for you with a cool Vista Home Premium, a 1 TB hard drive, an cool HDMI graphics card, Wi-Fi/ Max, a CD/DVD R/W, an HDTV tuner, surround sound, and a 17-inch flat monitor.

Thursday, February 28, 2008


Hi this is the next version of computers evolved. If this Coast Guard helicopter on the ground here reminds you all of a certain tropical fruit, you are not alone. This Piasecki HRP 1 twin-1 rotor aircraft was widely known as "the flying banana." There are many advantages to the tandem design as it was easier to control this design than one with a single rotor, also the additional lift meant more people and more cargo could be carried, and the weight distribution was less of an issue. The fuelage was curved so that the rear rotor was higher than the forward part one, to prevent the blades from colliding easily.
The HRP 1 part, with its 600-horsepower engine, could carry 10 passengers and 2 crew members, carry a load of up to 1,800 pounds, and cruise at 86 miles per hour. Its range was 265 miles, and also it's ceiling with a normal load was just over 10,000 feet. In this use with the Marine Corps as well as the help of Coast Guard, it performed functions includes search and rescue, heavy transport and also antisubmarine warfare.


Hi friends this time i came with the evolution of heli dopters. This is volume 4 of this chapter. This Sikorsky YR- 4B/ HNS-11 sits in a wind tunnel as a well developed technician sets up camera equipment to take the stop action photos of the rotors in the helidopter. The R-4 was the first helicopter to be built in any significant number ,several hundred were constructed during World War II.
The essence of this cool design, like that of PV -2 from Piasecki-a large main rotor present in it and a small vertical tail rotor has been the guiding force for most modern helicopters. Much of the credit for that design, and for turning the helicopters into a practical reality, goes to Igor Sikorsky, a Russian immigrant to this cool U.S.hapter

Saturday, February 23, 2008


Thursday, February 7, 2008


Monday, February 4, 2008

$ 8 Complete Prescription Eyeglasses+ Case

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Saturday, February 2, 2008



Through the first decades of the 20th century, the airplane had its coming of age in World War I dogfights and the postwar barnstorming craze; in 1927, Mr. Charles Lindbergh flew across the Atlantic, and in the early 1930s, Wiley Post made a pair of round-the-world flights.

The helicopter, meanwhile, was still awaiting a technological breakthrough. That's because it was a much more difficult mechanical problem to solve than was the fixed-wing air plane. Where airplanes get their lift from the wings, allowing for the use of a relatively modest engine for propulsion, helicopters rely on their rotors for both functions. Torque was another typical challenge-inventors kept trying new ways to counteract the twisting movement that was directed into the helicopter body from its large main rotor. Even today, helicopters are a noisier, shakier ride than their winged counter parts, the Aero planes.

One hybrid approach that got a few tries over the years was the autogyro. The one in this undated photo a Pitcairn PA A-1. The big overhead rotor aside, it's got a pretty standard monoplane fuselage. Autogyros were a big deal, at least briefly-Amelia Earhart flew them, while Herbert Hoover heaped praise on manufacturer Harold Pitcairn.


In 1907, only a few years had passed since the Wright brothers had discovered the first flight, and automobiles had yet to make much head way against horse-drawn carriages. In France, a number of people were trying out another novel mode of mechanical locomotion called the helicopter. Well, something vaguely resembling the modern helicopters, anyway. But the contraptions did count as the first successful steps, however brief, along the way to manned flight powered by some rotary wings. And that makes 2007 the centennial of the flying vehicle, the helicopter.

Designs by Mr. Maurice Leger, Jacques and Louis Breguet, and Paul Cornu all got off the ground in 1907-just barely, and for just a very few seconds into the air. These earliest machines also tended to require steadying from people on the ground. Cornu's craft, shown here, got air-borne in November of that year for as long as 20 seconds at an altitude, if you can call it that, of somewhere between knee high and eye level. It featured two rotors at opposite ends of the air frame that turned in opposite directions to balance out the torque. Will catch you soon with the next part of the helicopter's evolution