Quiz 1: Intro, Revision and MUX

Which device has one data input and many data outputs?

• Multiplexer

• Demultiplexer

• Encoder

• Decoder

Which device has one data output and many data inputs?

• Decoder

• Multiplexer

• Encoder

• Demultiplexer

How many select lines are required for a 1-to-4 demultiplexer?

• 2

• 4

• 1

• 3

How many select lines are required for a 8-to-1 multiplexer?

• 3

• 4

• 1

• 2

What is Moore's Law?

• Data storage capacity doubles every year

• Computing power doubles every year

• Transistor counts double every 1.5 years

• Memory size doubles every 2 years

What is the function of a multiplexer in digital circuits?

• To store multiple bits of data

• To perform logical operations on multiple inputs

• To select one of many inputs and forward it to a single output

• To convert digital signals to analog

What is the primary function of a demultiplexer in digital circuits?

• To store data temporarily

• To perform arithmetic operations

• To distribute a single input to multiple outputs

• To combine multiple inputs into one output

Which of the following is a component of combinational logic?

• Register

• Flip-flop

• Counter

• AND gate

Which of the following is a characteristic of sequential logic?

• Output depends only on current inputs

• Does not require a clock signal

• Uses memory elements

• Faster than combinational logic

What is the primary purpose of a flip-flop in digital circuits?

• To amplify signals

• To store binary data

• To convert analog signals to digital

• To perform arithmetic operations