# Logic Circuits

Discussion in 'Homework Help' started by jhef_cute_11, Dec 6, 2010.

1. ### jhef_cute_11 Thread Starter New Member

Nov 17, 2010
7
0
Hi senior members, can someone help me with my project ,
we are required to design a running message using gates and a 7 segment display as an output. . .

specification are as follows:

- use five letter that would spell out your name
(ex. Jeffb)
- use at least 1 capital letter
- at most 1 repetitive letter

ex. dorAi

0000 (blank)

0001 i

0010 A i

0011 r A i

0100 o r A i

0101 d O r A i

0110 upper segment of the display

for d = _I
for o = I-I
for r = -
for a = o
for i = i

its like cutting the downpart of the segment;
d o r A i
0111 - -
1000 (blank)
1001 _ _
1010 going up from the 2 lines of d and o
ex o = o (full small o seen in the 7 segment)

1011 d o r A i
1100 d o r A
1101 d o r
1110 d o
1111 d

2. ### jhef_cute_11 Thread Starter New Member

Nov 17, 2010
7
0
my desired name is JEFFb

3. ### jhef_cute_11 Thread Starter New Member

Nov 17, 2010
7
0
by the way, my desired name is JEFFb

4. ### Georacer Moderator

Nov 25, 2009
5,142
1,266
Your correspondancies between the desired letters and the 7-seg segments don't make much sense to my eyes.

Take a look at the datasheet of a typical 7-segment display.
http://www.cs.ucr.edu/cs120b/cs120b_02spr/labs/lab7.html

Can you break down each of your desired characters to a set of segments?
ie. d={1,2,3,4,7}