# Solving boolean algebra task - HELP

Discussion in 'Electronics Homework Help' started by Zeljo, Oct 8, 2015.

1. ### Zeljo

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Oct 8, 2015
TASK:You have to design boolean circuit (to draw it) which will allow driver to start car engine(car have only two seats).You can start engine and go if:
1. Key must be in place
2. Driver must be on seat
3. He have to be tied
4. The seet of one passenger is empty
5. If seat is full passenger must be tied
You have to create table(fill it with 0 or 1), to create function according to table and minimize function.
Finnaly you have to draw all circuits.

(Only hint j have is taht you will have two circuits one will have 4 input values and another will have 2 input values)

Last edited by a moderator: Nov 5, 2015
2. ### Bluejets

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Oct 5, 2014
Fairly basic "and/or" function, just wondering how much study you have done.

3. ### Zeljo

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Oct 8, 2015
Can you give me link for some pdf book

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Oct 5, 2014
5. ### Martaine2005

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951
May 12, 2015
Hi Zeljo,
That's really easy.

Martin

Arouse1973 likes this.
6. ### Bluejets

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Oct 5, 2014
It's easy for me also but then the op would learn nothing.

7. ### Martaine2005

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May 12, 2015
I didn't mean it was easy for me!
I have no idea either. But as the AD says, I know a man who does.

Martin

8. ### Bluejets

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Oct 5, 2014
I think you missed my point and the link I provided would give the op the oportunity to find the answer.

3,507
951
May 12, 2015
OK

10. ### dorke

2,342
665
Jun 20, 2015
Apart from the usual table method etc.
You can solve it "verbally" :

conditions 1 to 4:
"Key" AND "Driver" AND "driver-Tied" AND "pass-empty"

condition 5:
"pass-full" AND "pass-tied"

If at least one of the above 2 sentences is satisfied the total condition is satisfied.
That means "OR" between them.
take note that "pass_full" is the negation of "pass-empty"

Combine all in a single sentence and you have the solution.

11. ### Zeljo

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Oct 8, 2015
Thank`s guys you`re the best