This topic contains a solution. Click here to go to the answer

Author Question: You are troubleshooting a TTL circuit board containing dozens of IC chips. You have taken several ... (Read 58 times)

Chelseaamend

  • Hero Member
  • *****
  • Posts: 545
You are troubleshooting a TTL circuit board containing dozens of IC chips. You have taken several readings at numerous IC chips but the readings are inconclusive because of their erratic nature. Assuming the circuit worked properly at one time, what is the most likely cause of the problem?
 
  A) A solder bridge between the inputs on the first IC chip on the board
  B) A defective output IC chip that has an internal open to Vcc
  C) An open connection between the inputs on the first IC chip on the board
  D) A defective IC chip that is drawing excessive current from the power supply

Question 2

A 74HC85 magnitude comparator is used to:
 
  A) compare two input voltage levels and generate outputs to indicate which voltage has the greater magnitude.
  B) Exclusive OR two binary quantities and generate an output if they are unequal in magnitude.
  C) compare two input binary quantities and generate outputs to indicate which quantity has the greater magnitude.
  D) AND two binary quantities and generate outputs only if they are equal in magnitude.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

zoeyesther

  • Sr. Member
  • ****
  • Posts: 315
Answer to Question 1

D

Answer to Question 2

C




Chelseaamend

  • Member
  • Posts: 545
Reply 2 on: Jul 27, 2018
:D TYSM


xthemafja

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Excellent

 

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

For a complete list of videos, visit our video library