Correct question and answers for waec 2018 for enquiries call 08078768925 - Aba-Onigbagbo

Saturday, 24 March 2018
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City: Aba-Onigbagbo, Lagos

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Contact name Mr Henry
Phone 08078768925

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Basic Logic Gate Troubleshooting
Digital Circuits
Question 1
Counting practice: count from zero to thirty-one in binary, octal, and hexadecimal:
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Question 2
Predict how the operation of this logic gate circuit will be affected as a result of the following faults. Consider each fault independently (i.e. one at a time, no multiple faults):
Output of OR gate U fails low:
Output of inverter gate U fails low:
Output of AND gate U fails high:
For each of these conditions, explain why the resulting effects will occur.
Reveal answer