Introductory Concepts - Digital Design

Q1. Compared to analogue systems, digital systems:

• are less prone to noise;

• can represent an infinite number of values;

• can handle much higher power;

• all available choices.

Q2. The number of values that can be assigned to a bit are:

• one;

• two;

• three;

• ten.

Q3. The time measurement between the 50% point on the leading edge of a pulse to the 50% point on the trailing edge of the pulse is called the:

• rise time;

• fall time;

• period;

• pulse width.

Q4. The time measurement between the 90% point on the trailing edge of a pulse to the 10% point on the trailing edge of the pulse is called the:

• rise time;

• fall time;

• period;

• pulse width.

Q5.  The reciprocal of the frequency of a clock signal is the:

• rise time;

• fall time;

• period;

• pulse width.

Q6. If the period of a clock signal is 500 ps, the frequency is:

• 20 MHz;

• 200 MHz;

• 2 GHz;

• 20 GHz.

Q7. AND, OR, and NOT gates can be used to form:

• storage devices;

• comparators;

• data selectors;

• all available answers.

Q8. A shift register is an example of a:

• storage device;

• comparator;

• data selector;

• counter.

Q9. A device that is used to switch one of several input lines to a single output line is called a:

• comparator;

• decoder;

• counter;

• multiplexer.

Q10. For most digital work, an oscilloscope should be coupled to the signal using:

• ac coupling;

• dc coupling;

• GND coupling;

• All available answers.