SPGA stands for Staggered Pin Grid Array. For more information, read the article here: http://en.wikipedia.org/wiki/Staggered_Pin_Grid_Array
The grid. The countrywide network is the National Grid
Grid and snap settings are effective tools to use in your drawing to ensure accuracy. Although many users find it convenient to match grid points to snap settings, they are independent of each other and should not be confused. Grid points are for visual reference only; they do not affect your drawing and they do not print. Snap points are, by themselves, not visible; however, when set, they constrain the creation of new entities.Set snap spacingAnother way to ensure drawing accuracy is to turn on and set snap spacing. When snap is turned on, the program restricts the selection points to predetermined snap intervals. Although it is often helpful to match the snap spacing to some interval of grid spacing or another related setting, the settings do not have to match.Change the snap and grid angle and base pointThe snap and grid are both normally based on the drawing origin, the 0,0 coordinate in the World Coordinate System. You can relocate the snap and grid origin, however, to help you draw entities in relation to a different location. You can also rotate the grid to a different angle to realign the crosshairs to the new grid angle. If the grid is on, and the grid spacing is 0,0, then the grid defaults to the snap spacing.
"Distributed" or "grid" computing in general is a special type of parallel computing, it is advanced in the means of using distributed computing.
who knows? Some talk about a global grid where all services are provided à la cloud - others see numerous smaller, more business centric grids emerging. What ever the case, check out Gridipedia's library of case studies on grid computing which will show you how Grid is being used ruight now in everything from filmaking to pharmacy.
Earlier Pentiums used a pin grid array ( PGA ) socket, with pins aligned in uniform rows around the socket. Later sockets use a staggered pin grid array ( SPGA ), with pins staggered over the socket to squeeze more pins into a small space.
SPGA stands for Staggered Pin Grid Array. For more information, read the article here: http://en.wikipedia.org/wiki/Staggered_Pin_Grid_Array
The PGA socket has pins on the bottom of the package aligned in uniform rows. The SPGA socket has pins on the bottom of the package that are staggered to squeeze more pins into a small space.
staggered pin grid array (SPGA)
0 x 39 = 0 1 x 39 = 39 2 x 39 = 78 3 x 39 = 117 4 x 39 = 156 5 x 39 = 195 6 x 39 = 234 7 x 39 = 273 8 x 39 = 312 9 x 39 = 351 10 x 39 = 390
39/1
There are 4 squares in a 2 x 2 grid.
39 = 1 x 39, 3 x 13, 13 x 3, 39 x 1.
The bootom of the coordinate grid
x=3 (39)(x) = (39)(3) = 117
(39 x 26) + (39 x 13) = 39 x 39 = 1521
on a coordinate grid, X always comes before Y