... which text or buffer positions or rectangles can be saved for later use. Buses A bus is a channel or path between the components in a computer. Having a high-speed bus is important. A bus lets you connect computers components to the processor. The advantage of a bus is that it makes parts more interchangeable. If you want to get a better graphics card, you simply unplug the old card from the bus and plug in a new one. If you want two monitors on your computer, you plug two graphics cards into the bus. And so on. A PC usually has two buses. The first connects the CPU and the system memory. This is the fastest bus in the system. The second bus is the slower and it connects other devices, like the hard disk, CD drive, graphics card etc. These slower buses connect to the system bus through a bridge which ...

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