Faculty of Engineering and Applied Science
Memorial University of Newfoundland
ENGI 3861 - Digital Logic
Fall 2013
Laboratory 6:
Digital System Design
Pre-lab:
Each group is required to complete the pre-lab sections prior to the lab period. The pre-lab wi
ENGI 3861 Digital Logic
VIII. DIGITAL SYSTEM DESIGN
- most digital system designs are synchronous sequential logic
based on the following structure
Control Unit (CU)
state machine used to control flow of data in datapath
includes state machine hardware
Faculty of Engineering and Applied Science
Memorial University of Newfoundland
ENGI 3861 - Digital Logic
Fall 2013
Laboratory 2:
Combinational Circuit Design
Pre-lab
All students must review the complete lab prior to the lab period. Each group must
comple
ENGI 3861 Digital Logic
VI. SEQUENTIAL LOGIC DESIGN
- output of sequential logic circuit depends on current inputs plus
previous inputs as embodied in the current state
sequential logic circuit has memory or storage
- two general types of sequential logi
ENGI 3861 Digital Logic
Fall 2014
Selected Answers and Hints for Problem Set #2
Question 1:
(a) (4.50)
(a) 16 ns
(b) 18 ns
(c) 10 ns
(b) (4.61)
A negative pulse is generated starting tpropOR after falling edge of 2B and lasting
for a duration of 3 tpropIN
ENGI 3861 Digital Logic
II. COMBINATIONAL LOGIC DESIGN
Combinational Logic output of digital system is only dependent
on current inputs (i.e., no memory)
(a) Boolean Algebra
- developed by George Boole in 1850s
- algebra defined on a set of 2 elements, cf
Memorial University of Newfoundland
Electrical and Computer Engineering
ENGI 3861 - Digital Logic
Fall 2014
Problem Set #1:
Combinational Logic Design
Question 1:
Problem 1.6 from text.
Question 2:
Convert the following unsigned binary numbers to their de
Faculty of Engineering and Applied Science
Memorial University of Newfoundland
ENGI 3861 - Digital Logic
Fall 2013
Laboratory 4:
Flip-Flops and Sequential Circuits
Pre-lab:
The pre-lab will be checked by a TA at the start of the lab. If a group's pre-lab
Faculty of Engineering and Applied Science
Memorial University of Newfoundland
ENGI 3861 - Digital Logic
Fall 2013
Laboratory 3:
Two-bit Arithmetic and Logic Unit
Pre-lab
This is a long, complex lab. Hence, it is vital that each group thoroughly complete
Faculty of Engineering and Applied Science
Memorial University of Newfoundland
ENGI 3861 - Digital Logic
Fall 2013
Laboratory 1:
Lab Instruments and Simple Logic Circuits
Pre-lab
All students must review the complete lab prior to the lab period. Each grou
STUDENT NAME: A N § W U1 l
Faculty of Engineering and Applied Science
Memorial University of Newfoundland
ENGI 3861: Digital Logic
Midterm Test
Oct. 31, 2013
Duration: 75 minutes
Closed book. Calculators not permitted.
Total Marks: 60 (+ 3 bonus ma
Faculty of Engineering and Applied Science
Memorial University of Newfoundland
ENGI 3861 - Digital Logic
Fall 2013
Laboratory 5:
Counters
Pre-lab:
Each group is required to complete the pre-lab sections prior to the lab period. The pre-lab will be
checked
ENGI 3861 Digital Logic
III. DIGITAL CIRCUITS
(a) CMOS Logic
- recall that in Complementary Metal Oxide Semiconductor
(CMOS) logic, voltage level represents binary value with
typical levels being:
0 01.5 V,
1 3.55.0 V
How do we implement gates? using elec
Memorial University of Newfoundland
Electrical and Computer Engineering
ENGI 3861 - Digital Logic
Fall 2014
Problem Set #2: Digital Circuits and Combinational Logic Devices
Question 1:
(a) Problem 4.50 from text. (Why is (d) the preferred circuit?)
(b) Pr