**OR GATE**

**(1). Find the output of the OR gate when the inputs are A= 1100 B= 1010**

**(a). 1110 (b). 0101 (c). 10011**

**Solution Using Casio fx991es**

**[ON] [MODE] [4] [LOG] [1] [1] [0] [0] [SHIFT] [3] [2] [1] [0] [1] [0] [=]**

**Therefore Option A is correct.**

**AND GATE**

**(2). Find the output of the AND GATE when the inputs are A= 1100 B= 1010**

**(a). 1000 (b). 1100 (c). 0100**

**Solution Using Casio fx991es**

**[ON] [MODE] [4] [LOG] [1] [1] [0] [0] [SHIFT] [3] [1] [1] [0] [1] [0] [=]**

**Therefore Option A is correct.**

**XOR GATE**

**(3). Find the output of the XOR GATE when the inputs are A= 1100 B= 1010**

**(a). 0110 (b). 1100 (c). 0101**

**Solution Using Casio fx991es**

**[ON] [1] [1] [0] [0] [SHIFT] [3] [3] [1] [0] [1] [0] [=]**

**The answer will be in 4 digits**

**Therefore Option A is correct.**

**XNOR GATE**

**(4). Find the output of the XNOR GATE when the inputs are A= 1100 B= 1010**

**(a). 1001 (b). 1010 (c). 0001**

**Solution Using Casio fx991es**

**[ON] [1] [1] [0] [0] [SHIFT] [3] [4] [1] [0] [1] [0] [=]**

**Therefore Option A is correct.**

**NOT GATE OR INVERTER (SINGLE INPUT)**

**(5). Find the output of the NOT GATE when the inputs are A= 1100 B= 1010**

**(a). 1100 (b). 0100 (c). 1010**

**Solution Using Casio fx991es**

**[ON] [1] [1] [0] [0] [SHIFT] [3] [5] [1] [0] [1] [0] [=]**

**The answer will be in 4 digits from the inputs.**

**Therefore Option A is correct.**

**OR**

**(6). Find the output of NOT GATE when the input is 0**

**Solution Using Casio fx991es**

**[ON] [SHIFT] [3] [5] [0] [=]**

**Ans = 1**

**The answer will be in 1 digit from the input.**

**(NB: other gates are not included but only these ones, this operation can be use to identify the output in a logic gate eg: if the inputs of XOR GATE are 1 and 0 the output will be 1 solution: [ON] [MODE] [4] [LOG] [1] [SHIFT] [3] [0] [=] Therefore the answer is 1 remember the answer will be in 1 digit from the inputs and outputs).**