roundaboutthere

Wednesday, September 19, 2007

IPL

IPL is Initial program load, used in operating system. In computing, booting is a bootstrapping method that starts operating systems when the user turns on a computer system. A boot series is the set of operations the computer performs when it is switched on that loads an operating system.
Most computer systems can only complete code found in the memory (ROM or RAM). Modern operating systems are stored on hard disks, or occasionally on Live CDs, USB flash drives, or other non-volatile storage devices. When a computer is first power-driven on, it doesn't have an operating system in memory. The computer's hardware alone cannot perform complex measures such as loading a program from disk, so an apparent paradox exists, to load the operating system into memory, one appears to need to have an operating system already loaded. The System/360 IPL function reads 24 bytes from an operator-specified or pre-configured machine into memory starting at location zero. The second and third groups of eight bytes are treated as Channel Command Words (CCWs) to maintain loading the startup program. When the I/O channel instructions are complete, the first group of eight bytes is then loaded into the Program Status Word (PSW) register and the startup program begins completing at the designated locatio

Tuesday, September 04, 2007

Shipping

Shipping is basic method of transporting goods and cargo. Virtually every product ever made, bought, or sold has been exaggerated by shipping. Despite the lots of variables in shipped products and locations, there are only three basic types of shipments, land, air, and sea.
Land or ground shipping can be either by train or by automobile. Trucking is easily the most accepted form of shipping. Even in Air and Sea shipments, ground transportation is still required to take the product from its origin to the airport or seaport and then to its purpose. Ground transportation is typically more affordable than air shipments, but more costly than shipping by sea. Trucks are also much quicker than ships and rail but slower than planes.
Ground shipping can be cheaper and less limiting to size, quantity, weight, and type of freight than by air transport. Air transport is usually held in reserve for products which must be sent within a shorter time frame. Shipping can more generally refer to the transport of freight, self-determining of the mode of transport