ATT TEST 8 EXAM LATEST 2025
EXAM QUESTIONS WITH CORRECT
DETAILED ANSWERS ALREADY
GRADED A+
< LATEST VERSION >
1. What are 5 parts of a power supply? - ANSWER 🗸 Input, rectifier,
filter, regulator, protection
2. Which two parts of a power supply are optional? - ANSWER 🗸
Regulator and protection
3. What is the purpose of a power supply? - ANSWER 🗸 To convert
AC power into smooth DC power
4. What is the purpose of a decimal encoder? - ANSWER 🗸 Convert
decimal numbers to binary outputs
,5. What circuit converts binary numbers to outputs that represent
alphanumeric characters? - ANSWER 🗸 Binary decoder
6. Why are esds so sensitive to static electricity? - ANSWER 🗸 They
normally operate at very low current and voltage levels
7. What does a basic digital circuit look for? - ANSWER 🗸 The
presence or absence of a signal
8. 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
9. How are digital circuits classified? - ANSWER 🗸 level of
integration and by function
10. How many gates does small scale integration have? (SSI) -
ANSWER 🗸 less than 12 gates
11. How many gates does medium scale integration have? (MSI)
- ANSWER 🗸 12-99 gates
12. How many gates does large scale integration have? (LSI) -
ANSWER 🗸 100-9,999 gates
,13. How many gates does very large scale integration have?
(VLSI) - ANSWER 🗸 10,000-99,999
14. How many gates does ultra large scale integration have?
(ULSI) - ANSWER 🗸 100,000+ gates
15. What are the 3 basic functions of a buffer? - ANSWER 🗸
Protection, driver, switching
16. How many volts indicates a low? - ANSWER 🗸 0-.8
17. How many volts indicates a high? - ANSWER 🗸 2 or more
18. What is indicated by voltage between .8-2? - ANSWER 🗸 a
float
19. How are ics classified? (SSI, MSI, LSI....) - ANSWER 🗸 By
the number of gates
20. What is not normally used as a wire deposit on the wafer? -
ANSWER 🗸 Iron
21. When does an AND gate produce a high? - ANSWER 🗸
When both inputs are high
, 22. What does a NAND gate produce when both inputs are high?
- ANSWER 🗸 A low output
23. What does a NOR gate produce when all inputs are low? -
ANSWER 🗸 A high output
24. What does a NOR gate produce when there is a high input? -
ANSWER 🗸 A low output
25. When does an XOR gate produce a high? - ANSWER 🗸
When an odd number of inputs are high
26. When does an XOR gate produce a low? - ANSWER 🗸
When all inputs are low or an even number are high
27. What is the output of an NXOR when the inputs are
opposite? - ANSWER 🗸 A low
28. What is the output of an NXOR when the inputs are the
same? - ANSWER 🗸 A high
29. What are 3 common faults in digital systems? - ANSWER 🗸
open signal lines, shorted signal lines, faulty power supply
EXAM QUESTIONS WITH CORRECT
DETAILED ANSWERS ALREADY
GRADED A+
< LATEST VERSION >
1. What are 5 parts of a power supply? - ANSWER 🗸 Input, rectifier,
filter, regulator, protection
2. Which two parts of a power supply are optional? - ANSWER 🗸
Regulator and protection
3. What is the purpose of a power supply? - ANSWER 🗸 To convert
AC power into smooth DC power
4. What is the purpose of a decimal encoder? - ANSWER 🗸 Convert
decimal numbers to binary outputs
,5. What circuit converts binary numbers to outputs that represent
alphanumeric characters? - ANSWER 🗸 Binary decoder
6. Why are esds so sensitive to static electricity? - ANSWER 🗸 They
normally operate at very low current and voltage levels
7. What does a basic digital circuit look for? - ANSWER 🗸 The
presence or absence of a signal
8. 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
9. How are digital circuits classified? - ANSWER 🗸 level of
integration and by function
10. How many gates does small scale integration have? (SSI) -
ANSWER 🗸 less than 12 gates
11. How many gates does medium scale integration have? (MSI)
- ANSWER 🗸 12-99 gates
12. How many gates does large scale integration have? (LSI) -
ANSWER 🗸 100-9,999 gates
,13. How many gates does very large scale integration have?
(VLSI) - ANSWER 🗸 10,000-99,999
14. How many gates does ultra large scale integration have?
(ULSI) - ANSWER 🗸 100,000+ gates
15. What are the 3 basic functions of a buffer? - ANSWER 🗸
Protection, driver, switching
16. How many volts indicates a low? - ANSWER 🗸 0-.8
17. How many volts indicates a high? - ANSWER 🗸 2 or more
18. What is indicated by voltage between .8-2? - ANSWER 🗸 a
float
19. How are ics classified? (SSI, MSI, LSI....) - ANSWER 🗸 By
the number of gates
20. What is not normally used as a wire deposit on the wafer? -
ANSWER 🗸 Iron
21. When does an AND gate produce a high? - ANSWER 🗸
When both inputs are high
, 22. What does a NAND gate produce when both inputs are high?
- ANSWER 🗸 A low output
23. What does a NOR gate produce when all inputs are low? -
ANSWER 🗸 A high output
24. What does a NOR gate produce when there is a high input? -
ANSWER 🗸 A low output
25. When does an XOR gate produce a high? - ANSWER 🗸
When an odd number of inputs are high
26. When does an XOR gate produce a low? - ANSWER 🗸
When all inputs are low or an even number are high
27. What is the output of an NXOR when the inputs are
opposite? - ANSWER 🗸 A low
28. What is the output of an NXOR when the inputs are the
same? - ANSWER 🗸 A high
29. What are 3 common faults in digital systems? - ANSWER 🗸
open signal lines, shorted signal lines, faulty power supply
