With a control signal S you should be able to choose which one of the two signals A and B
to be sent to an output Y. When S = 0 you get Y = A and when S = 1 you get Y = B.
Draw a logical sheet for the system. You are free to make
a symbol for a
state buffer and use this symbol in the form.
A microcontroller has an input
(W for "Wake"). When the microcontroller
in sleep mode, a low level on this input
will wake the
external modules should be able
to awaken the microcontroller. They each have their output
W0, W1 and W2, and these output stage
are of the "open drain" type.
of the links between the modules and the microcontroller.
A logical sheet for a single system is shown in figur
e below :
How many transistors
function table for the system. Then create
a logical expression
with the help of
Compared with what you found in
the first question (how many
transistors does the system contain)
a logical expression directly from the logical
with the help of B
algebra. Compare it
with what you
a) and comment.
aw the logical form based on this expression. How many transistors
do you need
Logical form for a slightly la
rger system is shown in Figure 2 :
Repeat a) and b) for this system.
minimize the following Boolean expression
Set up a function table 4 → 1
with the help of signals S0 and S1
discharge through the output Y one of the input signals X0
Set up logical equation for Y.
Drawn up a logical diagram that realizes
the multiplexer. Do no
state buffer in this
Set up a function table and logic equation for the simple logic module
The backlog for
is tP1 and tP2 for OR gate.
Both signals A and B goes from low to high
level at time t0 = 0
goes both signals A and B low again.
Drawn up a
diagram for the logic module.
What can you say about the behavior com
pared to the function table set
up in section