Hello people ..

is possible to implement a 4 x 4-bit memory using the 4-bit parallel-in / parallel-out Register ??

the memory-like circuit will be able to store 4 words (each word is 4-bit), there will be 2-bit address decoder ( 00 for word no 1, 01 for word 2, 10 for word 3 and finally 11 for word no 4),

so decoder will select the 4bit word , using a switch , i will be able towrite data to the registers .. by another switch I will be able to extract the bits stored ..

any sort of help is really appreciated ...

 

The affirmative answer should be evident.

 

And affirmative means yes.

 

The affirmative answer should be evident.

hmm , I would like some explanation on how to setup the circuit .. please ?

 

It might be easier to draw than to explain. Look up the 4:1 multiplexer. These will take the one output bit from each of the four registers to produce the output. So you will need four of them.

 

It might be easier to draw than to explain. Look up the 4:1 multiplexer. These will take the one output bit from each of the four registers to produce the output. So you will need four of them.

allow me to explain ..

I have attached a multisim file , please open it to understand my need ..

J1 is a push button, What I want to happen is to have the button pushed down which will be encoded into BCD , BCD stored on the register , BCD to 7 Segment will read the stored BCD and display it ... now that read value shall remain on the screen untill somehow I erase it or enter new input ... please what should i do ?

 

Please some helpppppp !!!