A) Design a circuit that will demonstrate the operation of a 2114 static RAM. The four input-output (I/O) lines will be connected to four logic indicators (LEDs) on the trainer. Use four input logic switches for data input to the unit. The switches will connect to the I/O pins through a tri-state buffer (74244 / 74126). The four low order address lines will connect to the remaining four logic switches. Set the other address lines to ground. address lines to ground. Note that the tri-state buffer will act to isolate the logic switches from the memory outputs during a read operation. It will set the buffer to the high impedance state when reading the memory.

Build the circuits, and test for proper read / write operation. Be prepared to demonstrate these operations at any address location from 0000 - 1111. In other words, you should be able to write 4-bit patterns to multiple address locations between 0000 1111, and then read back these patterns.