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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

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