Dear Nairalanders,

Kindly assist me with this questions. I was given to be submitted tomorrow in my school.


1 . A four bit binary number is represented as A3 A2 A1 A0 where A0 equals to the LSB. Design a logic circuit that will produce a HIGH output whenever the binary number is greater than 0010 and less than 1000.


2. A circuit has four inputs P, Q, R, S representing the natural binary numbers 0 to 15, P is the MSB. The circuit has output X which is true if the input is divisible by two. Design this circuit using the basic gates. Design a second circuit to implement this function using NAND gates only.