Combinational Logic Circuits

The logic circuit in fig is equivalent to …………. gate

• AND

• OR

• NOR

• NOT

Write the Boolean expression for the gate shown

• A AND (NOT B)

• B AND (NOT A)

• B OR (NOT A)

The logic circuit in fig is equivalent to …………. gate

• AND

• OR

• NAND

• NOR

Which of the figures shown below represents the XOR gate

• 
• 
• 
• 

Which of the figures shown below represents the NAND gate

• 
• 
• 
• 

Describing the operation of 2 inputs OR gate , we can say:-

• The output is high when both inputs are high

• The output is high when at least one input is high

• The output is high when both inputs are low

• The output is always high

Identify the datasheet shown in fig

• 7402 datasheet

• 7408 datasheet

• 7432 datasheet

• 7486 datasheet

The Boolean expression related to the truth table shown is

• Y = A

• Y = B

• Y = A . B

• Y = A + B

The numbers of the pins that representing the GND & 5V in 7402 IC are:

• 5 & 14

• 14 & 5

• 7 & 14

• 6 & 12

How many NOT gates are contained in a 7404 IC?

• 2

• 4

• 6

• 8