Description : A two-input X-OR gate will produce a HIGH output when the inputs are at what logic levels?
Last Answer : . One or the other of the inputs must be HIGH, but not both at the same time.
Description : What is the equivalent logic gate of a two-input NAND gate with both inputs inverted?
Last Answer : OR gate.
Description : What resistance property is found in tunnel diodes but not in normal diodes?
Last Answer : Negative resistance.
Description : What is the main difference in construction between normal PN junction diodes and tunnel diodes?
Last Answer : The amount of doping.
Description : Specify the mechanism that SLDs lack that is required by laser diodes to achieve lasing.
Last Answer : SLDs have no built-in optical feedback mechanism.
Description : Why are LEDs preferred over laser diodes for low- and moderate-frequency analog applications?
Last Answer : LEDs require less complex circuitry than lasers.
Description : What causes the negative-resistance property of tunnel diodes?
Last Answer : The tunneling action
Description : In the illustrated circuit, if the input to leads 'B' and 'Y' was 24 VDC the output between 'A' and 'X' will be _________. EL-0069 A. 24 VDC B. 22.8 VDC, 24 VDC minus the 1.2 VDC voltage drop across two diodes C. undeterminable without knowing the turns ratio of the transformer D. 0 VDC
Last Answer : Answer: D
Description : When a circuit uses cathode biasing, the input signal can cause varia
Last Answer : Through the use of a bypass capacitor
Description : What type of logic gates are added to a parallel adder to enable it to subtract?
Last Answer : X-OR gates.
Description : A, what logic element enables FF3 to toggle with the clock?
Last Answer : The AND gate
Description : What logic levels must exist for the FF to be toggled by the clock?
Last Answer : Both J and K must be HIGH.
Description : How do we refer to errors caused by faulty logic and coding mistakes?
Last Answer : Bugs.
Description : How many logic gates could be contained in lsi?
Last Answer : 1,000 to 2,000.
Description : . In the arithmetic/logic section, data is returned to what section after processing?
Last Answer : Internal storage.
Description : What capability allows the arithmetic/logic section to test various conditions encountered during processing and take action based on the result?
Last Answer : Logic.
Description : In what state must the inputs to a NOR gate be in order to produce a logic 1 output?
Last Answer : All inputs must be low.
Description : A NAND gate has inputs labeled as A, B, and C. If A and B are HIGH, C must be at what logic level to produce a HIGH output?
Last Answer : . Low.
Description : A NAND gate has Z and X as inputs. What will be the output logic level if Z is HIGH and X is LOW?
Last Answer : HIGH.
Description : What must be the logic state of R and S to produce the TRUE output?
Last Answer : Both must be 1s (HIGH) at the same time.
Description : If logic 1 = -5 vdc and logic 0 = 0 vdc, what logic polarity is being used?
Last Answer : Negative.
Description : If logic 1 = +2 vdc and logic 0 = -2 vdc, what logic polarity is being used?
Last Answer : Positive.
Description : If logic 1 = -5 vdc and logic 0 = -10 vdc, what logic polarity is being used?
Description : With regard to computer logic circuits, what is meant by "complement?"
Last Answer : The opposite of the original statement.
Description : Which digital data encoding method helps overcome a tape recorder’s low-frequency response problems by recording two logic levels for each incoming data bit?
Last Answer : Bi-phase level encoding.
Description : What is the purpose of a logic probe?
Last Answer : They provide you with a visual indication of the logic state at any point you choose in the circuit.
Description : What does a lighted LED indicate on a logic comparator?
Last Answer : A difference in logic states between the reference IC and the IC under test.
Description : A lighted LED on a logic clip represents what logic level?
Last Answer : A "1" state.
Description : What are the two logic states of an IC?
Last Answer : A "1" or "0."
Description : The LED lamps of a typical logic probe are normally in what state?
Last Answer : DIM.
Description : Which type of optical splitter (Y-coupler or T-coupler) splits only a small amount of power from the input fiber to one of the output fibers?
Last Answer : T-coupler
Description : What type of feedback aids an input signal?
Last Answer : Regenerative or positive
Description : Central Processing Unit is combination of A) Control and storage B) Control and output unit C) Arithmetic logic and input unit D) Arithmetic logic and control unit
Last Answer : Answer : D
Description : The control unit of a microprocessor A) Stores data in the memory B) Accepts input data from keyboard C) Performs arithmetic/logic function D) None of above
Description : The central processing unit (CPU) consists of A) Input, output and processing B) Control unit, primary storage, and secondary storage C) Control unit, arithmetic-logic unit and primary storage D) Control unit, processing, and primary storage
Last Answer : Answer : C
Description : A micropocessor consists of: a) Arithmetic Logic Unit (ALU) b) Memories c) Input / Output devices d) All the above
Last Answer : Ans: A
Description : Which unit is responsible for converting the data received from the user into computer understandable format? a) Memory Unit b) Arithmetic & Logic Unit c) Input Unit d) Output Unit
Last Answer : Answer: c Explanation: The Input Unit converts the data, which the user enters into a language which the computer understands, i.e. it converts the data into binary format. The ... after immediate results of processing whereas; the ALU is responsible for various arithmetic and bitwise operations
Description : In a logic circuit, the NOT gate function _____________. A. does not alter a logical input B. serves to amplify a given signal level C. must be accomplished with a common collector transistor arrangement D. reverses an input logic condition
Description : One method of troubleshooting digital circuits in a console is to ___________. A. supply alternate logic levels at the input(s) and test for change of state conditions at the output B. ground all ... output D. vary each input smoothly from 0-10 volts and test for similar variance at the output
Last Answer : Answer: A
Description : The central processing unit (CPU) consists of a. Input, output and processing b. Control unit, primary storage, and secondary storage c. Control unit, arithmetic-logic unit and primary storage d. Control unit, processing, and primary storage
Last Answer : Control unit, arithmetic-logic unit and primary storage
Description : Central Processing Unit is combination of a. Control and storage b. Control and output unit c. Arithmetic logic and input unit d. Arithmetic logic and control unit
Last Answer : Arithmetic logic and control unit
Description : The ……….. is code that recognizes some special sequence of input or is triggered by being run from a certain user ID of by unlikely sequence of events. a) Trap doors b) Trojan horse c) Logic Bomb d) Virus
Last Answer : a) Trap doors
Last Answer : c. Control unit, arithmetic-logic unit and primary storage
Last Answer : d. Arithmetic logic and control unit
Description : The ……….. is code that recognizes some special sequence of input or is triggered by being run from a certain user ID of by unlikely sequence of events. A) Trap doors B) Trojan horse C) Logic Bomb D) Virus
Last Answer : A) Trap doors
Description : An aspect of Input/Output controller of data logic is called (1) General Buffering (2) Zero Buffering (3) Buffering (4) Data Buffering
Last Answer : Buffering
Description : Arithmetic and Logic Unit I. Perform Arithmetic operations II. Store Data III. Perform comparisons IV. Communicate with input devices Which of the following is true ? (1) I only (2) III only (3) I and II (4) I and III
Last Answer : I and III