The Strowger switch was the first example of an electromechanical stepping switch telephone exchange system. It was invented by Almon Brown Strowger, and first patented in 1891. Because of its operational characteristics it is also known as a step-by-step (SXS) switch.
Strowger, an undertaker, was motivated to invent an automatic telephone exchange after having difficulties with the local telephone operators, one of whom was the wife of a competitor. He was said to be convinced that she, as one of the manual telephone exchange operators, was sending calls "to the undertaker" to her husband.
He first conceived his invention in 1888, and patented the automatic telephone exchange in 1891. It is reported that the initial model was made from a round collar box and some straight pins.
While Almon Strowger may have devised the concept, he was not alone in his endeavors and sought the assistance of his brother Arnold, nephew William and others with a knowledge of electricity and money to realize his concepts. The Strowger Automatic Telephone Exchange Company was founded in 1891.
SxS (S-by-S) is a flash memory standard compliant to the Sony and SanDisk-created ExpressCard standard. According to Sandisk and Sony, the cards have transfer rates of 800 Mbit/s and burst transfer rate of up to 2.5 Gbit/s over the ExpressCard's PCI Express interface. Sony uses these cards as the storage medium for their XDCAM EX line of professional video cameras.
The card can be inserted directly into an ExpressCard slot, available on many notebooks. However, it will only work in Windows and Mac OS X, and only with a Sony device driver installed on the machine. Experimental Linux drivers are also available.
The only universal connectivity for these cards is the Sony SBAC-US10 and Sony SBAC-US20. These external USB adapters will make the cards visible to any system as an external USB hard drive. The Sony SBAC-US20 uses the USB 3.0 interface and has a suggested retail price of US$350.
SxS PRO+ is a faster version of SxS designed for the recording of 4K resolution video. SxS Pro+ has a guaranteed minimum recording speed of 1.3 Gbit/s and an interface with a theoretical maximum speed of 8 Gbit/s.
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Today's a jubilee
Don't be surprised this change is my design
I feel a force I've never felt before
I don't want to fight it anymore
Feelings so strong can't be ignored
I burst out, I'm transformed
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And laugh in the face that is vulture law
I burst out, I'm transformed
I feel a force I've never felt before
I don't want to fight it anymore
Feelings so strong can't be ignored
I burst out, I'm transformed
I feel a force I've never felt before
I can't hold it down I've just got to soar
And laugh in the face that is vulture law
I burst out, I'm transformed
I burst right out into a swan
I burst out into a swan
I feel a force
I don't want to fight it
I feel a force