Principles of Computer Engineering EEC_4_402: Introduction.

Principles of Computer EngineeringEEC_4_402: Introduction

Introduction Mr Ya Bao (Semester 1)

Room T-701, Tower Block email: [email protected] Tel: 020 7815 7588

Office Hours Mondays 15:00 – 16:00

Lecture notes www.lsbu.ac.uk/vle, or from your mylsbu

VLE trainingDay Date Time Session Title Room

Monday 22/09/2014 11:00 - 12:00 Moodle and IT Essentials LRC002

Monday 22/09/2014 15:00 - 16:00 Moodle and IT Essentials LRC002

Tuesday 23/09/2014 15:00 - 16:00 Moodle and IT Essentials LRC002

Wednesday 24/09/2014 15:00 - 16:00 Moodle and IT Essentials LRC002

Thursday 25/09/2014 11:00 - 12:00 Moodle and IT Essentials LRC002

Thursday 25/09/2014 15:00 - 16:00 Moodle and IT Essentials LRC002

Tuesday 30/09/2014 11:00 - 12:00 Moodle and IT Essentials LRC002

Tuesday 30/09/2014 15:00 - 16:00 Moodle and IT Essentials LRC002

Wednesday 01/10/2014 15:00 - 16:00 Moodle and IT Essentials LRC002

Thursday 02/10/2014 11:00 - 12:00 Moodle and IT Essentials LRC002

Thursday 02/10/2014 15:00 - 16:00 Moodle and IT Essentials LRC002

Friday 03/10/2014 11:00 - 12:00 Moodle and IT Essentials LRC002

Friday 03/10/2014 15:00 - 16:00 Moodle and IT Essentials LRC002

Text books (semester 1)

Electric Circuits, Nilsson & Riedel, Prentice-Hall, 10E. 2015; ISBN:978-1-292-06054-5

Digital Electronics, Roger L. Tokheim, Mcgraw hill, 8E, 2014; ISBN:978-1-259-06092-2

Overview Module Overview Assessment Methods Log books Good practice in labs Theory for Labs wk 2 Summary

Learning Outcomes Develop an understanding of the principles of circuit theory

and basic analogue electronics Introduce the concept of digital systems To develop your ability to manage and perform the successive

steps involved in typical practical engineering experiments To develop your ability to work as a member of a team To develop your ability to communicate technical information

(report writing)

Assessment Methods Course split 50% Semester 1 & 50% Semester 2 Phase Test: 20%

Scheduled for Week 8 in T-807 Formal report: 20%

Due by Week 13, submit to Faculty Office by 7th Jan 2015 Logbooks: 10%

Submit with reports to Faculty Office by 7th Jan 2015

Lab & Lecture Schedule1. Introduction to Lab Equipment2. Voltage, Current, Power & Ohm’s Law3. Kirchoff’s Laws of Current and Voltage (*)4. Source Transformations5. Wheatstone Bridge6. Electric Fields and Capacitors7. Transformers and Rectifiers8. Phase Test 9. Logic Circuits10. Timing Circuits and Counters11. Revision

RULES: While you are in the lab No drinking No eating No smoking No dangerous activity Take care with electrical devices Switch off your mobile phone and ipod, distractions waste time

Log Books (p7 of your lab manual) You MUST keep a log book! Do not use loose paper for

intermediate recording before transfer to the log book. You must use the log book to document your procedure and

results AS YOU GO ALONG Draw graphs only on graph paper, use pencil where needed Answer all questions from the script in your log Add ideas/points of interest too Conclude each experiment with the key points You MUST get your LOGBOOK stamped at the end of session You MUST leave your logbook in the lab

Go to stores J205 or good stationers and buy a suitable book with lined paper and add graph paper as needed

Best logbooks are Chartwell Laboratory Books A4-641C

Page number Date Names of the group

members Title of the experiment Brief description of the

procedure Carefully record your results Do NOT use ‘Tipp-Ex’

Graphs should have a caption

Make maximum use of the graph paper

Choose an easy scale Label the axes Units Error margins/bars

Error Margins You MUST estimate error margins for any reading you make You should propagate these errors for any calculations you

make Common measurement devices

Oscilloscope ±3% Digital Multimeter ±1% Analogue Meter ±5%

The Breadboard Close-Up

Horizontally Connected

VerticallyConnected

Break

Break

VerticallyConnected

Error Margins Common components

E12 Resistor ±5% Electrolytic Capacitor ±20% Digital Timer ±0.001%

Example logbook notation 1.00kΩ ±5% 56.2 s ±0.3s

Avoid quoting too many significant figures 3 is usually about right

Resistor E series tables of values

Finally Please keep your Laboratory Manual safe! Lab and lecture schedule on VLE All related materials will be posted on VLE – check often Please arrive promptly at 17:00 so we can start the lab on time

Any questions?

Principles of Computer Engineering: Experiment 1

Introduction to test equipment

Experiment 1 Introduction to Breadboard Build simple electrical circuits Develop familiarity with Digital and Analogue Multimeters Introduction to Oscilloscopes and Signal Generators

Building a Circuit on the Breadboard Push the component legs into suitably located sockets on

breadboard with care Try to layout circuit neatly to look like that of the circuit

diagram Double check circuit before connecting power (check polarity!) Use colour coded wires where possible; red = +V, black = 0V,

blue = -V

Example Circuits to be Built

The Lamp Circuit

Digital and Analogue Multimeters Can be used to accurately measure voltage and current in a

circuit Have different characteristics – simple experiment to compare

them DMM has an accuracy of around ±1% Analogue MM accurate to around ±5% Ideally have infinite internal resistance as acting as a voltmeter

Digital and Analogue Multimeters Use 1MW resistors in series with both Voltmeters to estimate

their input resistances

Figure 2Analogue meter in high impedance5 volt circuit

VPSU

- +

Analoguemeter

+

1 M Resistor

Vm

1M

Rx 5 V

IL

Figure 4 Loading effects at 5 volts

Meter

+

+

The Oscilloscope

Used to display time varying waveforms

Apply sinusoidal signal from generator at 1kHz (Alternating current)

Measure frequency and voltage with ‘scope facilities

Peak-to-Peak Voltage can be measured

22pp

rms

VV

The Oscilloscope

Summary Become familiar with use of a breadboard Build elementary circuits and test them Use standard test bench equipment and appreciate their

accuracy Introduce the use of oscilloscopes