A student has to use an appropriate number of (i) NAND gates (only) to get the output `y_(1)` (ii) NOR gates (only) to get the output `y_(2)` from two given input A and B as shown in the Fig.

Identify the 'equivalent gate' needed in each case. Show how one can connect an appropriate number of (i) NAND (ii) NOR gates respectively in the two cases to gat the equivalent gates.

Explanation

From the ouput waveform `y_(v )` we can clearly gate . Similarly the for output `y_(b)` the equivalent gate is and AND gate .
(i) When the three NAND gates are connected as shown below .

the equivalent gate will be an OR gate
(ii) When the three NOR gates are connected as shown below .