Assignment title: Information
TASK 1: (LO4.1) 400 words
a) Using Manufacturer's datasheets complete the table below using Nominal values for the logic families.
LS TTL ALS TTL CMOS HCMOS
VIL
VIH
IIL
IIH
VOL
VOH
IOL
LOH
Fan-out
Noise Margin
b) Define the terms Fan-out and Noise Margin.
TASK 2: (LO4.2a & LO4.3a)
Design a circuit whose output goes HIGH when its inputs are: A is high and B is low and either input C or input D is also HIGH.
Procedure:
Note (Use Karnaugh Maps to check the SOP found in task 2 Part B, is equivalent to the original Boolean expression, found in Part a)
a) Derive a Boolean that describes the performance of the required circuit.
b) Rearrange the expression in Sum-of-Products (SOP) form.
c) Using simulation software, Draw the circuit diagram and simulate its operation.
d) Produce a four-variable truth table and apply all combinations of input variables to the circuit and each time note the logical state.
e) Demonstrate the circuit operation to your tutor.
A B C D F
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
Demonstrate, with photographic evidence, that you have simulated the circuit in Task 2
TASK 3: (LO4.2b & LO4.3b)
a) Design a 4 bit asynchronous counter using JK flip flops to count between( 2 and 9). Your design must include:
Flow diagram
Sequence table
Karnaugh maps
b) Using a Multisim, construct the counter and demonstrate to your Tutor.
Note: 400 words
Produce a report containing the information found for TASKs 2 and 3. You will need to use a variety of word processing features and circuit diagrams created in Multisim. You will also need to use engineering language correctly.