IF you wish to have a precisely 1Hz square wave oscillator, the circuit as the followings.

View attachment 107521

And with better precision than my 7555 circuit.

 

And with better precision than my 7555 circuit.

Im gonna use s 555 timer instead

 

Im gonna use s 555 timer instead

That works, same circuit.

 

I found this

http://www.circuitstoday.com/scmitt-trigger-circuit-using-ne-555

(How do i put the button on this)

 

I found this

http://www.circuitstoday.com/scmitt-trigger-circuit-using-ne-555

(How do i put the button on this)

At the input, if it works. I'll have to build that one. The problem I see is that the Threshold input will only get up to 1/2 of VCC. Not the necessary 2/3 VCC.
Not the first time my understanding failed me.
(edited to add ...)
Don't forget to add a pull up resistor on the switch. I don't think component values are too critical as long as the two timing resistors are about equal.

 

At the input, if it works. I'll have to build that one. The problem I see is that the Threshold input will only get up to 1/2 of VCC. Not the necessary 2/3 VCC.
Not the first time my understanding failed me.

Its cool that you always have parts ready to help others (multisim is confusing)

 

Its cool that you always have parts ready to help others (multisim is confusing)

I got a whole school's worth of parts.
I struggle with Multisim also. It is difficult to gather libraries of parts. I use ORCAD for schematic drawing. A ton of libraries and easy to make any part not in a library. Free demo version has few drawbacks.