Att Test 8 Exam 2025 Questions and Answers
When a feedback line is used in a logic (digital) circuit, it is called a _________ -
ANS Sequential citcuit
What is a WORD? - ANS A complete piece of digital data
Flip flops store information by using what? - ANS Feedback from output gates to input gates
What part of the clock pulse is used to level trigger a flip flop? - ANS Low pulse width
What is the purpose of a register? - ANS To store and transfer data
How does the logic probe indicate a high signal? - ANS By a red led
Integrated circuits were made possible by the invention of what? - ANS Semiconductor
devices
What are 3 common features in all IC's? - ANS Pins, parts number, pin indicator
Which IC family has the lowest power rating? - ANS CMOS
Which IC family has the fastest switching speed? - ANS ECL
Pg. 1 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
, Which IC family has the lowest power requirements? - ANS CMOS
Which IC family has input/output voltages of 0V-15V? - ANS CMOS
What is the advantage of TTL over ECL? - ANS Lower power
What is the purpose of a decimal encoder? - ANS Convert decimal numbers to binary outputs
What circuit converts binary numbers to outputs that represent alphanumeric characters? -
ANS Binary decoder
Why are ESDs so sensitive to static electricity? - ANS They normally operate at very low
current and voltage levels
What does a basic digital circuit look for? - ANS 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?
- ANS 0 volts/low/false/off
How are digital circuits classified? - ANS level of integration and by function
How many gates does small scale integration have? (SSI) - ANS less than 12 gates
How many gates does medium scale integration have? (MSI) - ANS 12-99 gates
How many gates does large scale integration have? (LSI) - ANS 100-9,999 gates
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
When a feedback line is used in a logic (digital) circuit, it is called a _________ -
ANS Sequential citcuit
What is a WORD? - ANS A complete piece of digital data
Flip flops store information by using what? - ANS Feedback from output gates to input gates
What part of the clock pulse is used to level trigger a flip flop? - ANS Low pulse width
What is the purpose of a register? - ANS To store and transfer data
How does the logic probe indicate a high signal? - ANS By a red led
Integrated circuits were made possible by the invention of what? - ANS Semiconductor
devices
What are 3 common features in all IC's? - ANS Pins, parts number, pin indicator
Which IC family has the lowest power rating? - ANS CMOS
Which IC family has the fastest switching speed? - ANS ECL
Pg. 1 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
, Which IC family has the lowest power requirements? - ANS CMOS
Which IC family has input/output voltages of 0V-15V? - ANS CMOS
What is the advantage of TTL over ECL? - ANS Lower power
What is the purpose of a decimal encoder? - ANS Convert decimal numbers to binary outputs
What circuit converts binary numbers to outputs that represent alphanumeric characters? -
ANS Binary decoder
Why are ESDs so sensitive to static electricity? - ANS They normally operate at very low
current and voltage levels
What does a basic digital circuit look for? - ANS 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?
- ANS 0 volts/low/false/off
How are digital circuits classified? - ANS level of integration and by function
How many gates does small scale integration have? (SSI) - ANS less than 12 gates
How many gates does medium scale integration have? (MSI) - ANS 12-99 gates
How many gates does large scale integration have? (LSI) - ANS 100-9,999 gates
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
