ATT TEST 8 LATEST EXAM WITH QUESTIONS AND VERIFIED CORRECT ANSWERS/ ALREADY GRADED A++

ATT TEST 8 LATEST EXAM WITH QUESTIONS AND
VERIFIED CORRECT ANSWERS/ ALREADY GRADED A++

When a feedback line is used in a logic (digital) circuit, it is called a
_________ - ANSWER Sequential citcuit

What is a WORD? - ANSWER A complete piece of digital data

Flip flops store information by using what? - ANSWER Feedback from
output gates to input gates

What part of the clock pulse is used to level trigger a flip flop? - ANSWER
Low pulse width

What is the purpose of a register? - ANSWER To store and transfer data

How does the logic probe indicate a high signal? - ANSWER By a red led

Integrated circuits were made possible by the invention of what? -
ANSWER Semiconductor devices

What are 3 common features in all IC's? - ANSWER Pins, parts number,
pin indicator

Which IC family has the lowest power rating? - ANSWER CMOS

Which IC family has the fastest switching speed? - ANSWER ECL

Which IC family has the lowest power requirements? - ANSWER CMOS

Which IC family has input/output voltages of 0V-15V? - ANSWER CMOS

What is the advantage of TTL over ECL? - ANSWER Lower power

What is the purpose of a decimal encoder? - ANSWER Convert decimal
numbers to binary outputs

What circuit converts binary numbers to outputs that represent
alphanumeric characters? - ANSWER Binary decoder

,Why are ESDs so sensitive to static electricity? - ANSWER They normally
operate at very low current and voltage levels

What does a basic digital circuit look for? - ANSWER The presence or
absence of a signal

The presence of a signal is classified by: 5 volts/high/true/on. What is the
absence classified by? - ANSWER 0 volts/low/false/off

How are digital circuits classified? - ANSWER level of integration and by
function

How many gates does small scale integration have? (SSI) - ANSWER less
than 12 gates

How many gates does medium scale integration have? (MSI) - ANSWER
12-99 gates

How many gates does large scale integration have? (LSI) - ANSWER 100-
9,999 gates

How many gates does very large scale integration have? (VLSI) -
ANSWER 10,000-99,999

How many gates does ultra large scale integration have? (ULSI) -
ANSWER 100,000+ gates

What are the 3 basic functions of a buffer? - ANSWER Protection, driver,
switching

How many volts indicates a low? - ANSWER 0-.8

How many volts indicates a high? - ANSWER 2 or more

What is indicated by voltage between .8-2? - ANSWER a float

How are ICs classified? (SSI, MSI, LSI....) - ANSWER By the number of
gates

, What is not normally used as a wire deposit on the wafer? - ANSWER Iron

When does an AND gate produce a high? - ANSWER When both inputs
are high

What does a NAND gate produce when both inputs are high? - ANSWER A
low output

What does a NOR gate produce when all inputs are low? - ANSWER A
high output

What does a NOR gate produce when there is a high input? - ANSWER A
low output

When does an XOR gate produce a high? - ANSWER When an odd
number of inputs are high

When does an XOR gate produce a low? - ANSWER When all inputs are
low or an even number are high

What is the output of an NXOR when the inputs are opposite? - ANSWER
A low

What is the output of an NXOR when the inputs are the same? - ANSWER
A high

What are 3 common faults in digital systems? - ANSWER open signal lines,
shorted signal lines, faulty power supply

Which internal IC fault can produce signals with 3 different voltages? -
ANSWER Shorts between pins

What is used to determine the amount of current drawn from a power
supply? - ANSWER A multimeter

What is a characteristic of shorts? - ANSWER Excessive heat

What function is produced when 3 NAND gates are connected? - ANSWER
OR