In each column of this spreadsheet, you can store eight binary values or a bite. However, electronically RAM looks very different. Now in the real world RAM looks like a stick like this. Its job is to allow lots of different peripherals, hard drives and things like RAM, to also connect to the CPU. In fact, that's the job of a motherboard. Now that external data bus doesn't just come out of the CPU and end, it extends throughout our computer. There are a lot bigger today, but this will get us started. Now the CPU has an external data bus, in this case, I'm just going to say it's an eight bit external data bus. The question is, how does it do it? It's actually really fascinating. We know that the CPU has to grab lines of code from RAM. But why so many wires? Well, I'm going to add to the list here a little bit and talk about something very important. And I'm sure set one of these is probably a clock wire, and a few of these are probably voltage and a few of these are ground. And you always wonder, why does it need so many connectors? Based on other episodes, we've learned stuff like the external data bus, which is going to be in our examples, we only used eight wires. On modern CPUs can be over 2000 of these little connectors. It's got so many little wires or little pad contacts. You know, it's always fun to look at the bottom of a CPU.
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