Datapoint later decided not to use the chip, and Intel marketed it as the 8008 in April, 1972. This was the world's first 8-bit microprocessor. It was the basis for the famous Mark-8 computer kit advertised in the magazine Radio-Electronics in 1974. Source(s): http://en.wikipedia.org/wiki/Microproces...
In the photo in the middle, we see a mother opossum with babies down a wall. She actually can climb up and out. They are really good climbers. When I go into an attic to look for opossums, I usually look down all the available walls, and that's where I find them. That was the case in the right photo.
Once under the house, they can almost always find a way up into the walls, via architecture gaps or where holes are cut to allow plumbing pipes through. And yes, rats can enter a house via plumbing and even sewer pipes, and come up through the toilet. Here are four small examples of easy-to-spot rat entry points.