1.) If a 3 input NOR gate has eight input possibilities, how many of those possibilities result in a HIGH output? (a.) 1 (b.) 2 (c.) 3 (d.) 7 (e.

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1 Name: Multiple Choice 1.) If a 3 input NOR gate has eight input possibilities, how many of those possibilities result in a HIGH output? (a.) 1 (b.) 2 (c.) 3 (d.) 7 (e.) 8 2.) The output of an OR gate with three inputs, A, B, and C, is low when. (a.) A=1, B=1, C=0 (b.) A=0, B=0, C=0 (c.) A=1, B=0, C=1 (d.) A=1, B=0, C=1 (e.) All of the above 3.) Which of the following logic expressions is represented by the + sign in Boolean algebra? (a.) Inverter (b.) AND (c.) OR (d.) NOR (e.) NAND 4.) Output will be LOW for any case when one or more inputs are zero for a(n): (a.) OR gate (b.) NOT gate (c.) AND gate (d.) NOR gate (e.) NAND gate 5.) TTL operates from a. (a.) 9 volt supply (b.) 3 volt supply (c.) 12 volt supply (d.) 1.5 volt supply (e.) 5 volt supply 6.) The output of a NOR gate is HIGH if. (a.) all inputs are HIGH (b.) any input is HIGH (c.) Any input is LOW (d.) all inputs are LOW (e.) Noe of the above Saved As: DE Final Exam ( ) A 1

2 7.) If a 3 input AND gate has eight possibilities, how many of those possibilities result in a HIGH output? (a.) 1 (b.) 2 (c.) 3 (d.) 7 (e.) 8 8.) The Boolean expression for a 3 input AND gate is. (a.) x=ab (b.) x=abc (c.) x=a+b+c (d.) x=ab+c (e.) x=a(b+c) 9.) What does the small bubble on the output of the NAND gate logic symbol mean? (a.) open collector output (b.) State machine operator (c.) The output is inverted (d.) Both (a.) & (c.) (e.) None 10.) The output of a NOT gate is HIGH when. (a.) the input is LOW (b.) the input is HIGH (c.) when clock is grounded (d.) Power is applied to the gates output. (e.) when the clock switches from 0 to 1 11.) How many inputs of a four input AND gate must be HIGH in order for the output of the logic gate to go HIGH? (a.) any one of the inputs (b.) any two of the inputs (c.) any three of the inputs (e.) All four inputs (e.) None of the above 12.) Which of the following gates has the exact inverse output of the OR gate for all possible input combinations? (a.) XOR (b.) XAND (c.) NOR (e.) NAND (e.) NOT Saved As: DE Final Exam ( ) A 2

3 13.) The output of an exclusive OR gate is HIGH if. (a.) All inputs are LOW (b.) All inputs are HIGH (c.) The inputs are unequal (d.) The inputs are all the same. (e.) None of the above. Determine the value of the resistor with the following color bands. You might find it helpful to go to the following website: 14.) Orange/Black/Orange/Silver = (A.) 25KΩ ± 5% (B.) 20KΩ ± 10% (C.) 3KΩ ± 5% (D.) 2KΩ ± 10% (E.) 30KΩ ± 10% 15.) Violet/Green/Yellow/Gold = (A.) 850 Ω ± 10% (B.) 750KΩ ± 5% (C.) 850KΩ ± 5% (D.) 725KΩ ± 10% (E.) 750 Ω ± 5% Saved As: DE Final Exam ( ) A 3

4 Determine the color code of the resistor with the following value. 16.) 230 KΩ ± 10% (A.) (B.) (C.) (D.) (E.) Red/Orange/Yellow/Silver Brown/Orange/Violet/Gold Red/Orange/Yellow/Silver Red/Green/Yellow/Gold Red/Green/Violet/Silver 17.) What does LED stand for a. Light electric display b. Light emitting diode c. Large enhanced display d. Large electric display e. None 18.) What does the following schematic represent a. Battery b. Ceramic Capacitor c. Resistor d. LED e. None of the above. 19.) Resistance is measured in units of a. Amps b. Farads c. Ohms d. Volts e. None 20.) If you have a 6v battery and a 300Ω resistor what current would flow through the circuit? a. 20 ma b. 50 A c. 294 A d. 306 A e A Saved As: DE Final Exam ( ) A 4

5 21.) The following waveform patter with A and B are inputs, X is the output, is for a(n) a. 2 input AND gate b. 2 input OR gate c. 2 input XOR gate d. 2 input XNOR gate e. 2 input NAND gate 22.) Use the grid to match the following Boolean expressions to the switch circuit that best describes its function. (a.) A 0 0 (b.) A A 1 (c.) A A 0 (d.) A 1 1 (1) (2) (3) (4) 23.) To remove excess solder off of the soldering iron you should a. Tap the soldering iron in the table b. Rub it off with your hand c. Wipe it off on a wet sponge d. Wipe it off on yours shirt 24.) Which of the following is in scientific notation a. 112,000 b *10 2 c. 564*10 3 d ) 35mV is equal to a. 3.5*10 3 V b. 35*10 3 V c. 3.5*103 V d. 35*103 V 26.) If you have a 100Ω, 200Ω and 200Ω resistor in parallel the total resistance is Saved As: DE Final Exam ( ) A 5

6 a. 0 Ω b. 50 Ω c. 167 Ω d. 500 Ω 27.) If you have a 100Ω, 200Ω and 200Ω resistor in series the total resistance is a. 0 Ω b. 50 Ω c. 167 Ω d. 500 Ω 28.) What is 2910 in binary? a b c d. None of the above 29.) Which of the following is a digital wave 30.) What is 2910 in octal decimal? a. 358 b. 538 c d ) What is 2910 in hexadecimal? a. C1H b. 1C H c. 13 H d. 113 H 32.) What is in base 10? a b c d ) What is in octal decimal? a. 278 b. 338 c. B18 d. 1B8 34.) What is in hexadecimal? Saved As: DE Final Exam ( ) A 6

7 a. 27H b. 33 H c. 37 H d. B7 H 35.) The equivalent to the following diagram is a. AND b. OR c. INVERT d. None of the above 36.) The equivalent to the following diagram is a. AND b. OR c. INVERT d. None of the above 37.) The equivalent to the following diagram is a. AND b. OR c. INVERT d. None of the above 38.) The equivalent to the following diagram is a. AND b. OR c. INVERT d. None of the above 39.) The equivalent to the following diagram is a. AND b. OR c. INVERT d. None of the above 40.) Which segments are not turned on for a seven segment display showing a. a and b b. a and d c. b and e d. c and f 41.) Solve the following binary addition problem Saved As: DE Final Exam ( ) A 7

8 a b c d ) Solve the following binary addition problem a b c d ) What is the two s compliment of ( 7) in 4 bit binary? a b c d ) What is the component in Figure 6 a. D Flip Flop b. De Multiplexer c. Multiplexer d. Resistor Pack 45.) If a low input is put into the Preset of Figure 6 the Q is a. Depends on the input b. Depends on the previous output c. Always 1 d. Always 0 46.) Saved As: DE Final Exam ( ) A 8

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12 57.) What is the unit of time used in the following line: Pause 3000 (a.) Hours (b.) Minutes (c.) Seconds (d.) Milliseconds 58.) When Plugging your servos into the Board of Education how should the white wires be oriented? (a.) The white wires should be toward the outer edge of the board. (b.) The white wires should plug into PIN 10 & PIN 11 (c.) (d.) The white wires should be furthest from the edge of the board. It really doesn t matter how the white wires are oriented. 59.) A simple diagram that displays the duration of the pulses being sent to the servos or LEDs is called a (a.) Wiring Schematic (b.) Timing Diagram (c.) Duration Diagram (d.) Voltage Diagram 60.) If you send the command PULSOUT 12, 750 and the servo (12) begins to spin counter clockwise then (a.) (b.) (c.) (d.) The servo is functionally perfect. The servo should be going clockwise The servo was mounted on the wrong side of the BoeBot. The servo needs to be centered. Saved As: DE Final Exam ( ) A 12

13 Free Response 61.) When designing a circuit that outputs the year using a seven segment display you must first set up the truth table accordingly. Complete the table below. 62.) Determine the Boolean Expression for each of the circuits below. A B A = B = C D C = D = 63.) Which of the circuits above are logically equivalent? Saved As: DE Final Exam ( ) A 13

14 64.) Simplify the following Sum of Product Boolean expressions. F 2 ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD 65.) Use a K Map to determine the simplest expression given the following truth table. 66.) Show step by step the Boolean simplification for 67.) Create a 4 bit counter using D Flip Flops. Saved As: DE Final Exam ( ) A 14