Its a simple circuit of RAM, 3 bits and it has 4 address.
Controls and display are at bottom left.
Decimal point light says if its writing/reading. On writing
Top row is write switch (active high)... due to delay in this app to store any data make it logic high and wait till it write the data. Which will be shown in display. After its written make the switch low for better operation.
Second row is address. 2 switches represent 4 address.
Third row is data In. 3 bits i.e 0-7 its used only to write data. Use top row switch to write data.
Sorry if english is bad..
