That is to say, the lesson of the QWERTY story remains the resilience of a design created for an outmoded technology's dictates. QWERTY is still an example of technological momentum. But the development of the design wasn't accidental or silly: it was complex, evolutionary, and quite sensible for Morse operators.
The Half Sheet cake is approximately 11 X 15 inches in size and is typically one layer thick but may come in single or multiple layers if a filling is added. Source(s): http://www.usabirthdays.com/delivery/cak...
Home Size Pans. A home-size jelly roll or sheet cake pan is roughly equivalent to a commercial quarter-size sheet cake, measuring either 10 1/2 inches by 15 1/2 inches by 1 inch (10 cups), or 12 1/2 inches by 17 1/2 inches by 1 inch (12 cups).