Flashcards in NAVEDTRA 14185A, NEETS Mod. 13, Ch. 3 Deck (24):

1

## Which gate is a modified OR gate that produces a HIGH output when only one of the inputs is HIGH?

### Exclusive OR (XOR)

2

## What are combinations of logic gates that combine binary values to obtain a sum?

### Adders

3

## Which circuit can add two binary digits but will not produce a carry?

### Quarter adder

4

## What is designed to combine two binary digits and produce a carry?

### Half adder

5

## Subtraction is accomplished in computers by the R’s complement and what other method?

### ADD

6

## What may be used to store data temporarily, to multiply or divide, to count operations, or to receive and transfer information?

### Flip-flops

7

##
Which type of bistable device changes state on command from a common input terminal?

### Toggle

8

## What is the most widely used FF because of its versatility?

### J-K FF

9

##
What is a timing signal generated by the equipment to control operations?

### Clock

10

## The frequency stability of the astable multivibrator can be increased by applying what to the circuit?

### Trigger pulse

11

## What allow functions involving more than one operation to be completed during a single clock cycle?

### Multiphase clocks

12

## What do most modern high-speed equipment use as the basis for their timing networks?

### Crystal-controlled oscillators

13

## What is the total number of counts or stable states a counter can indicate called?

### Modulus

14

##
Which term is used to describe the count capability of counters?

### Modulo

15

## Which term means that the events (setting and resetting of FFs) occur one after the other rather than all at once?

### Asynchronous

16

##
High-frequency operations require that all the FFs of a counter be triggered at the same time to prevent errors. Which type of counter is used for this type of operation?

### Synchronous

17

## What is defined as a loop of bistable devices (flip-flops) interconnected in such a manner that only one of the devices may be in a specified state at one time?

### Ring counter

18

##
Which type of temporary storage device is used to store data, memory addresses, and operation codes?

### Register

19

## Which type of register can the contents be shifted one or more places to the left or right?

### Shift register

20

## Which term means that the data is moved along a single line one bit at a time?

### Serial transfer

21

## Which term means that each bit of data is moved on its own line and that all bits transfer simultaneously?

### Parallel transfer

22

## Which term means to change the magnitude of a number?

### Scaling

23

## What are groups of logic circuits that are based on particular types of elements (resistors, transistors, and so forth)?

### Logic families

24