What happens when the input to a digital IC is left unconnected for TTL IC’s?


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21

May 5, 2021

An acceptable voltage range of a logic 0 for CMOS operating at Vdd = 5V ___


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26

May 5, 2021

What is the output of an EXNOR gate when a logic signal and its exact inverse are connected to its input?


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61

May 5, 2021

A graphical device used to convert a truth table to its corresponding logic circuit in a simple, orderly process ___


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20

May 5, 2021

Determine the sumof products expression for a circuit with four inputs and an output that is HIGH only when input A is low at the same time that exactly two inputs are low ___


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23

May 5, 2021

A circuit with no memory characteristic, and so its output depends only on the current value of its inputs ___


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22

May 5, 2021

In boolean algebra, X + 1 =___


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27

May 5, 2021

In boolean algebra, B.B' =


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28

May 5, 2021

Simplify the expression y = AB'D + AB'D' ___


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18

May 5, 2021

The boolean expression for a sixinput OR gate ___


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19

May 5, 2021

Use the expression for x = D + [(A+B)C]'. E to determine the output of the circuit for conditions ___


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15

May 5, 2021

Determine the output of the circuit x if A = 0, B = 1, C = 1, and D = 0


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18

May 5, 2021

The output of an inverter is connected to the input of a second inverter. Determine the output level of the second inverter ___


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13

May 5, 2021

What is the hex equivalent of an ASCII code which means "HELP"?


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18

May 5, 2021

The most widely used 7 bit alphanumeric code is the ___


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20

May 5, 2021

The ___ belongs to a class of codecs called the minimumchange codes, in which only one bit in the code group changes when going from one step to the next


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27

May 5, 2021

Which of the following items below is NOT one of the three basic operations in Boolean algebra?


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16

May 5, 2021

Convert (B2F)16 to octal ___


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19

May 5, 2021

What is the smallest type of semiconductor in terms of their physical size?


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14

May 5, 2021

A digital circuit is also referred to as a/an circui ___


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53

May 5, 2021

What is the next binary number following (10111)2 in the counting sequence?


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26

May 5, 2021

Change in state is ___What is the decimal equivalent of (1101011)2?


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17

May 5, 2021

Which of the following choices is NOT a characteristic of analog quantity ___


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21

May 5, 2021

A circuit made up of combinations of logic gates, with no feedback from outputs to input ___


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68

May 5, 2021

Performing binary subtraction to 6 1/4 minus 4 1/2 results to ___


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15

May 5, 2021

An analog memory circuit used to eliminate aperture error is called a ___


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11

May 5, 2021

Add 74(8) with 1.1(2) ___


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14

May 5, 2021

Which of the following below is not one of the three major sections of an MPU?


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15

May 5, 2021

Meaning of checksum in ROM's ___


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14

May 5, 2021

Why are voltage DAC's generally slower than current DAC's?


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29

May 5, 2021
