Online Engineering Continuing Education Courses

Introduction to number system and logic

Quiz Questions:

1.	Blaise Pascal (French) invented the first adding machine in 1642.

		True
		False

2.	The MSD in a number is the digit that has the greatest effect on that number and the LSD has the least effect on that number.

		True
		False

3.	The number from which another number is to be subtracted is ___________ and the quantity to be subtracted is ____________.

		Minuend and Subtrahend
		Subtrahend and Minuend

4.	The BINARY NUMBER SYSTEM is a ____system

		Base -2
		Base -8
		Base -16

5.	The OCTAL NUMBER SYSTEM is a ______ system

		Base -2
		Base -8
		Base -16

6.	The HEX NUMBER SYSTEM is a _____ system

		Base -2
		Base -8
		Base -16

7.	The AND gate is a logic circuit that requires all inputs to be TRUE at the same time in order for the output to be TRUE.

		True
		False

8.	In the OR gate, two switches are placed in parallel. If either or both of the switches are closed (view A), the lamp will light. The only time the lamp will not be lit is when both switches are open (view B).

		True
		False

9.	The NOR gate is an OR gate with an inverter on the output.

		True
		False

10.	In DIGITAL LOGIC (positive or negative), the TRUE condition of a statement is represented by the logic 1 state and the FALSE condition is represented by the logic 0 state.

		True
		False

11.	The exclusive OR gate is a modified OR gate that produces a HIGH output when only one of the inputs is HIGH.

		True
		False

12.	Does the adder make use of the and gate.

		Yes
		No

13.	Flip-flops are bistable multivibrators.

		True
		False

14.	The D FF is a two-input FF. The inputs are the data (D) input and a clock (CLK) input. The clock is a timing pulse generated by the equipment to control operations. The D FF is used to store data at a predetermined time and hold it until it is needed. This circuit is sometimes called a delay FF.

		True
		False

15.	A _____ register is a register in which the contents may be shifted one or more places to the left or right.

		Shift
		Bit

16.	RTL is an acronym for

		Resistor-Transistor Logic
		Register Transistor Logic

17.	What are RTL, DTL, and TTL examples of?

		Logic families
		Logic devices

18.	A circuit that generates timing control signals in a computer or other type of digital equipment is called ______

		Pulse
		Clock