It is a 4-bit RAM.
It has 5 inputs :
1) Select.
2) Data input.
3) Write/Read.
4) Shift.
5) CLK.
When Select is 1, the RAM becomes active.
Make Write mode = 1.
For every bit serial data input, make shift 1 and 0, to store data manually.
Make Read mode = 0.
Serial Data Output is indicated by glowing LED.
Now, keep Data Input = 0, write mode = 1, point the 3-pin switch toward CLK.
Wait few seconds to see data cleared/reset.
Now keep the 3-pin to Shift and make all first 4 pins low (0). Done!
