Quiz

Register NO

What will be the output from a D flip-flop if D = 1 and the clock is low?

• No change
• Toggle between 0 and 1
• 0
• 1

Let, a sequence detector is used to detect a sequence of 1101. How many times the output of the detector will go high for the input 1011011010011010111101 if overlapping sequence is not allowed?

• 1
• 4
• 2
• 3

What is the binary equivalent of the decimal number 368

• 101110000
• 110110000
• 111010000
• 111100000

The total number of Boolean functions which can be realised with four variables is:

• 4
• 16
• 256
• 65536

Q = BD' + BC' +AB

• true
• False

In the following truth table, V = 1 if and only if the input is valid. What function does the truth table represent?

• Priority encoder
• Decoder
• Multiplexer
• Demultiplexer

We want to design a synchronous counter that counts the sequence 0, 1, 0, 2, 0, 3 and then repeats. The minimum number of flip-flops required to implement this counter is

• 1 t0 2
• 2 to 3
• 3 to 4
• no flip flops needed

Consider the 2-bit multiplexer (MUX) shown in the figure. For OUTPUT to be the XOR of C and D, the values for A0, A1, A2 and A3 are ___________.

• A0=0, A1=0, A2=1, A3=1
• A0=1, A1=0, A2=1, A3=1
• A0=0, A1=1, A2=1, A3=0
• A0=1, A1=1, A2=0, A3=0

X = 01110 and Y = 11001 are two 5-bit binary numbers represented in two’s complement format. The sum of X and Y represented in two’s complement format using 6 bits is:

• 100111
• 001000
• 000111
• 101001