3-Floor-Elevator-Logisim-

####---What is the Logisim?---

http://www.cburch.com/logisim/qanda.html

####---How to use?---

http://www.cburch.com/logisim/docs/2.7/en/html/guide/tutorial/index.html

Here you can see the main circuit.

Here you can see the display circuit.

Here you can see the Truth table of display circuit, that I used to make the circuit:

A	B	C	D		a	b	c	d	e	f	g
0	0	0	0		1	1	1	1	1	1	0
0	0	0	1		0	1	1	0	0	0	0
0	0	1	0		1	1	0	1	1	0	1
0	0	1	1		1	1	1	1	0	0	1
0	1	0	0		0	1	1	0	0	1	1
0	1	0	1		1	0	1	1	0	1	1
0	1	1	0		1	0	1	1	1	1	1
0	1	1	1		1	1	1	0	0	0	0
1	0	0	0		1	1	1	1	1	1	1
1	0	0	1		1	1	1	0	0	1	1
1	0	1	0		1	1	1	0	1	1	1
1	0	1	1		0	0	1	1	1	1	1
1	1	0	0		1	0	0	1	1	1	0
1	1	0	1		0	1	1	1	1	0	1
1	1	1	0		1	0	0	1	1	1	1
1	1	1	1		1	0	0	0	1	1	1