Do you or do you not agree with the student? Briefly describe your thoughts.
computer science
Description
1.
A student constructed an
enable/disable circuit using an OR gate.
The
flashing lamp indicates the logic state of the data input at Pin #1 keeps
changing with time, which is normal.
The student thought the circuit was not working properly and performed troubleshooting to obtain the results shown in the table below.
(a) Do you or do you not agree with the student? Briefly describe your thoughts.
(b) If you do not agree, what would you do differently to prove your
point?
In case you agree with the student, what would you do to resolve the issue?
2.
Shown at the top right corner
is the pinout diagram of a 7486 XOR gate IC.
(a) An IC chip has a reference notch so that users can identify the pin
number of each pin.
Based on the pin numbers shown, draw the reference notch on the pinout diagram. (1 mark)
(b) Let’s say we use the gate at the top right in the pin diagram above
to construct a controlled inverter.
If a data input A is
connected to pin #13, what should be the logic level of the control input at
Pin #12 to get A’ at Pin #11?
3. Construct the following circuit using
any of the available ICs below.
Show your circuit by labels rather than wire connections when
possible. You can define your own labels when necessary.
To this
end, you need to write the pin number of each
pin on the schematic diagram.
