This instructable I'm going to show you how to make a RAM to use with a micro-controller for storing data and it is also expandable and uses only one IC and no other components. It is easy for any hobbyist to make.(COMMENT PLEASE) on to the next step!
Step 1: The chip
The chip is a ten bit decade counter the "4017" but we only use two bits. You will make only six connections. Here is the data sheet of the chip. (COMMENT PLEASE) On to the next step!