2020 Scout BSA Programming Merit Badge presentation

Programming
Merit Badge
February 1, 2020 – 9am
Jean-Etienne Poirrier
jepoirrier@gmail.com
This presentation (except
parts taken from other,
referenced work) is licensed
under a Creative Common
Attribution-ShareAlike 4.0
International License

What will be seen today?
1. Safety
2. History of programming
3. Programming today
4. Intellectual property
5. Careers
And we’ll program a little bit!
Did anyone
want to
present?

What will NOT be seen today?
A lot!
Because programming exists since at least 50-100 years (since
computers existed – approximately)
But if you have any question (on topics seen here or on anything else
related to programming), let me know and I’ll try my best to answer!
(also, Stack Overflow probably has the answer to most questions!
https://stackoverflow.com/questions)

Why me?
• Jean-Etienne “Jep” Poirrier
• Biologist by training, working in the pharmaceutical industry, building
health economics models for vaccines
• B.Sc. in computer sciences
• Wrote a few Open Source software
• Wrote 1 scientific paper demonstrating the usefulness of a software I
co-created
• Wrote dozens of articles about Linux and other Open Source software

And why you? 
• Bobby A.
• Charles B.
• Daniel C.
• Sam D.
• Tyson E.
• Alexander F.
• Arijeet G.

And so? What is programming?
• Programming is the act of inserting instructions into a computer or
machine to be followed.
• There are many different career fields involving the programming of
computers; each utilizing different languages, techniques, and
systems.
• We are only going to cover a few of the different aspects of
programming during this Merit Badge, but there are so many more.

Programming
is converting
ideas into
instructions
Understand the purpose of the program
(requirements)
Break instructions into steps (design)
Translate design into language (coding)
Verify actual results match expected
results (testing)

2020 Scout BSA Programming Merit Badge presentation

RSIs - Repetitive Stress Injuries
• Carpal tunnel syndrome
• Cervical radiculopathy
• Reflex sympathetic dystrophy
• Tendonitis
•

First Aid for RSIs
• Apply an ice pack to the injured area to help reduce pain and swelling
• Use an elastic joint support or wrap the area firmly with an elastic bandage
to limit the swelling and to protect the injury. Do not wrap it so tightly that
blood circulation is restricted!
• Rest the injured area
• Take an anti-inflammatory pain reliever as recommended by your physician
• After 24 hours, heat (hot packs, heating pad, whirlpool) may be applied
• As symptoms diminish, gently exercise the affected muscles or joints to
help relieve remaining tenderness, stiffness, and tingling or numbness
• If pain is severe or persistent, seek medical attention

Injury prevention
• Proper equipment (+ ergonomics)
• HYDRATION
• Soda, juices and other sweet drinks are
not a substitute for water
• Program in a well-lit room (prevent eyestrain)
• Minimize the contrast between your monitor
and the rest of the room
• Make sure there is no glare on the screen
• Take breaks to give your body time to recover

Take breaks
• Eye breaks
• Look away from the monitor from time to time, preferably at something more than 20 feet away.
This gives your eyes a chance to relax and helps prevent eyestrain.
• Typing breaks
• Rest your hands in a relaxed, flat, straight manner to give them time to recover and prevent RSIs
• Rest breaks
• Take a break every 30 minutes or so to give your body a chance to relax. You can use software
programs that remind you to take a break so you don’t get stuck in a trance staring at your
monitor
• Exercise breaks
• Get up and stretch, rotate your head and shoulders, move your
arms and legs.
• You will find that you can program better and longer if you do
this regularly

Ergonomics 65cm = 25.6 in
75cm = 29.5 in

Electrical safety
• Keep liquid and food away from plugged-in
machines
• Be sure the equipment is properly grounded to
prevent shock hazards
• It’s best to unplug the computer when it’s not in
use, especially during a thunderstorm
• Make sure any cords are neatly stowed to prevent
tripping

Additional pointers
• Computer-Related Repetitive Stress Injuries (Johns Hopkins):
https://www.hopkinsallchildrens.org/Patients-Families/Health-
Library/HealthDocNew/Computer-Related-Repetitive-Stress-Injuries
• 12 tips for an Ergonomic Computer Workstation (Cornell University):
http://ergo.human.cornell.edu/DEA6510/dea6512k/ergo12tips.html
• 25 Ergonomic Tips For Students When Working At A Computer (Vista
College): https://www.vistacollege.edu/blog/resources/25-
ergonomic-tips-when-working-at-a-computer/

1. Safety
Now you can answer Requirements 1a And 1b!

Before computers
Before the modern electrical computer,
mechanical devices used in factories were
the first machines to be programmed.
An example is the Joseph Jacquard Loom
(1804) which used hole-punched cards to
“program” patterns into fabric.
The picture on the left is the loom.
The picture on the right is a portrait of Jacquard was
woven in silk on a Jacquard loom and required 24,000
punched cards to create (1839). One of these
portraits in the possession of Charles Babbage
inspired him in using perforated cards in his
Difference Engine.

Before computers
Charles Babbage in 1823 started work on
his Difference Engine. It was programmed
using punch cards and could do simple
calculations to 31 digits. Do to high costs, it
was not built until 1991, well after his
death. It weighed 15 tons and was 8 ft tall.
It used human-power to turn the gears and
cranks and output the result using wheels
with digits painted on.
Fun Fact: The gear technology didn’t exist to build his machine, so
Babbage invented new ways of cutting gears. This incidentally
advanced machinery and factories during the end industrial
revolution (1760-1840).
Ada Lovelace, the first programmer, theorized how to program Babbage's
Machines.

Before computers
In 1985, Herman Hollerith designed the
“Electric Tabulating System”, a machine
designed to take on the 1890’s Census.
It was an early Scantron machine using
punch cards.
The 1880’s Census took 7 years to
count, so do to the growing population,
the 1890’s and 1900’s Censuses would
have taken more than 10 years. This
would not be good.
With his machine, the 1890’s Census
only took 6 weeks rather than 10 years.
This proved computers were a viable
solution to many previously impossible
problems.

Conditional ControlTransfer
<condition> <action a> <action b>
<raining> <stay inside> <go outside>
<condition> <action>
<raining> <hold umbrella>
Programming Pioneer
1903-1957

Early computers
ENIAC – Electronic Numerical Integrator And
Computer (1946)
• First general purpose computer
• Used Base-10 instead of Binary (Base-2)
• Used to calculate firing-tables for the military.
UNIVAC – UNIVersal Automatic Computer (1951)
• First commercial computer
• Brought computers into the public eye after it
correctly predicted the “total-upset, landslide”,
1952 Presidential Election.
ENIAC 1946 – What do you notice about this photo

History of programming
• What was the first programming
language?
• Binary / Machine Language (ML)
• Binary / ML is really hard to read, but
it can be done.
• Early computers used switches and
cables to accomplish this.
• It is insanely fast, only limited by
hardware speed.
• All programming languages end up as
Binary / ML at some point during
execution.

• Next came Assembly Language (ASM)
• Slightly easier to read than Binary / ML
• Still very fast because it maps back to
Binary / ML
• Very few people ‘need’ to program is
ASM
• There is a different Assembly Language
for each CPU design, so it is not portable
code.
• Why is portable code good?

Assembly language is hardware specific
and is compiled into machine language
(binary code)

Next-Generation Languages came around the 1950’s.
They allowed:
• Code portability between different systems
• Easier to write, read and debug code
• Allowed for new concepts (i.e. functions, classes, objects, OOP)
• Explored new fields (i.e. science, math, computer science, data science, business)
The first big languages were… (in order of creation)
FORTRAN, LISP, COBOL, BASIC and Pascal

1950s
• FORTRAN (1957)
• LISP (1958)
• COBOL (1959)
1960s-1970s
• BASIC (1964)
• Pascal (1970)
• C (1972)

Additional pointers
• History of programming languages:
https://en.wikipedia.org/wiki/History_of_programming_languages
• Visual history of programming languages:
https://visual.ly/community/infographic/technology/history-
computer-programming
• Ada Lovelace: https://en.wikipedia.org/wiki/Ada_Lovelace

2. History of programming
Now you can answer Requirements 2a!

Programming Now
How many languages do you recognize?
C
C++
Java
JavaScript
HTML
CSS
Python
Ruby
PHP
OpenCL
SQL
MATLAB
Erlang
Ada
Objective-C
Swift
Mathematica
C#
Visual Basic
Rust
F#
R
Go
PowerShell
BASH
TypeScript
PostScript
CoffeeScript
Perl
x86-Assembly MASM
RegEx
PL/SQL
MIPS
ColdFusion
LaTeX
XML
JSON
Ladder Logic
YAML
Batch

Programming Now
Why are the languages grouped into colors?
C
C++
Java
JavaScript
HTML
CSS
Python
Ruby
PHP
OpenCL
SQL
MATLAB
Erlang
Ada
Objective-C
Swift
Mathematica
C#
Visual Basic
Rust
F#
R
Go
PowerShell
BASH
TypeScript
PostScript
CoffeeScript
Perl
x86-Assembly MASM
RegEx
PL/SQL
MIPS
ColdFusion
LaTeX
XML
JSON
Ladder Logic
YAML
Batch

C
C++
Java
JavaScript
HTML
CSS
Python
Ruby
PHP
OpenCL
SQL
MATLAB
Erlang
Ada
Objective-C
Swift
Mathematica
C#
Visual Basic
Rust
F#
R
Go
PowerShell
BASH
TypeScript
PostScript
CoffeeScript
Perl
x86-Assembly MASM
RegEx
PL/SQL
MIPS
ColdFusion
LaTeX
XML
JSON
Ladder Logic
YAML
Batch
The Green Languages are General Programing Languages
The Purple Languages are Scripting Languages
The Red Languages are Markup Languages
The Blue Languages are Declarative Languages
The Orange Languages are Assembly Languages
Different types of languages have different purposes.
It is important to match the type of work to the correct language to insure the best results.

Programming Languages
Here are a few languages and the problems they try to tackle…
C++ – General Purpose, High Performance | ex. Game Engines, Desktop Apps (Adobe Photoshop, Chrome)
C – General Purpose, High Performance, Light Weight | ex. Linux OS, macOS, Integrated Circuits, Drivers
Java – General Purpose, Multiplatform | ex. Minecraft, Server Apps, Android Apps
C# – General Purpose, Windows Platform | ex. Unity Games, Server Apps, StackOverflow
Swift – General Purpose, iOS & macOS | ex. most apps for iPhones and macOS (replaced Objective-C)
SQL – Database Communication
JavaScript – General Web Scripting | ex. Interactive webpages, webpages that can run dynamic code
HTML – Webpage Design, Layout and Markup
CSS – Webpage Styling, Coloring, Fonts and Positioning
PHP – Web Server Code | ex. Backend Web Dev., Web Content Management Systems (i.e. WordPress)
TypeScript – Stricter Superset of JS that transpiles into JS |ex. Large JavaScript Apps
XML – Human and Machine readable file format for data sharing between apps

Programming Examples
Hello World
C++
#include <iostream>
int main(int argc, char *argv[])
{
char myString[] = “Hello World!”;
std::cout << myString << std::endl;
return 0;
}
Java
class HelloWorld {
private String myString = "Hello World!";
public static void main(String args[]) {
System.out.println(myString);
}
}
Notice how different languages can look very different even when they are doing the same task.
Notice also how the bracing ( i.e. “{}”) style is different between languages.

C - The foundation for many other language
Combines the power of assembly
language with the readability and
main ainabili of assembl lang age.
C is used for:
Computer applications
Embedded Softwares
Creating compilers
Unix Kernel

C++ - High performance programming language
Enough rope to shoot yourself in the
foo .
C++ is used for:
Software for large scale ecommerce
videogames
Adobe systems
CAD (Autodesk)
Most microsoft applications
Browsers (Firefox))

Minecraft was programmed using Java

Hello World
C#
using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication1
{
class HelloWorld
{
String myString = "Hello, world!";
static void Main(string[] args)
{
Console.WriteLine(myString);
}
}
}
X86 Assembly
.486
.model flat, stdcall
.stack 100h
option casemap :none
ExitProcess PROTO Near32 stdcall, dwExitCode:dword
putch PROTO Near32 stdcall, bChar:byte;
.data
strMyString byte "Hello World",0
.code
main PROC
mov ecx, LENGTHOF strMyString
mov esi, OFFSET strMyString
L1:
invoke putch, byte PTR esi
inc esi
loop L1
invoke ExitProcess,0
main ENDP
END main

Hello World
JavaScript
myString = "Hello World!";
console.log(myString);
Python
myString = 'Hello World!'
print(myString)
Notice how different languages can look very different even when they are doing the same task.

Python - simple zen like programming language
Compile, run and ship your pseudo-
code.
Python is used for:
scientific and numeric computing
Web and Internet Development
Teaching programming
Software Development
Desktop GUIs

Programming Language Types
Languages can be split into a three different levels..
• High-Level (ex. Python, Ruby, JavaScript, Java, SQL)
• C-Level (ex. C, C++, Rust)
• Low-Level (x86 Assembly, Machine Language)

Why would you use a High-Level, Low-Level or C-Level language?
• Low Level
• Pros: Fast Execution, No Overhead, Single Platform, Compiled
• Cons: Hard to read, write, debug, and maintain
• Examples: ML, MASM, TASM, NASM, MIPS
• High-Level
• Pros: Easier to read, write, debug, and maintain, Multi-
Platform, Compiled or Interpreted
• Cons: Slower than Low-Level, not as much control over
hardware
• Examples: Python, Ladder-Logic, JavaScript, Java, SQL
• C-Level
• Best of both worlds, Compiled
• Good control over hardware with ease of writing.
• Examples: C, C++, Rust, FORTRAN, PASCAL
Notice: Java, Python, etc. are one level higher than FORTAN, C and
PASCAL

This photo illiterates the difference
between compiled and interpreted
languages…
Use your computers to make a list of
3 compiled languages and 3
interpreted languages.
Where would you use a compiled
languages vs an interpreted
language?
Done once
Done every time
Done every time

Grace Hopper creates first compiler
The first
compiler A-0
turned
statements into
ones and zeros
which the
computer could
understand.

Programmed Devices
Our lives are filled with so many programmed devices, you many not
even notice…
What are somethings around your house that are programmed?
• Smart TVs, Smart Door Bells
• Xbox, PlayStation, Wii, Ms. Pacman
• Microwave, Wi-Fi Router (these two are the same thing)
• Etc..
What language do you think these were programmed in?

Additional pointers
• 100 Of The Most Popular Programming Languages Explained In Minutes:
https://www.whoishostingthis.com/resources/programming/
• Code academy: www.codeacademy.com
• Code.org: www.code.org
• Learn Python: www.learnpython.org
• Learn C++: www.learncpp.com
• Scratch: scratch.mit.edu
• Killer PHP: www.killerphp.com
• W3 Schools: www.w3schools.com

3. Programming today
Now you can answer Requirements 3a and 3b!

László Jozsef Bíró,
the inventor of the ballpoint pen
U.S. Patent No. 2390636:
“Writing Instrument.”
U.S. Patent No. 2734484:
“Ball Point Pen.”

Intellectual
Property
Copyright protection (©)
Protects a particular expression of an
idea that the author created
Automatic + registration with the U.S.
Copyright Office (~ $85)

Intellectual
Property
Patents
Protects useful innovative
processes or methods,
machines, manufactured
items, or “compositions
of matter”.
Must be applied for
(USPTO)
Need to describe inner
workings

Intellectual
Property
Patents
Protects useful and
innovative processes or
methods, machines,
manufactured items, …
A new and
revolutionary math
algorithm used in an
app

Intellectual
Property
Patents
of matter”.
Must be applied for
(USPTO)
workings
Trademark (™)
Protects a word, phrase, symbol, sound or color
that identifies or distinguishes the source of a
particular product or service

Intellectual
Property
Patents
of matter”.
Must be applied for
(USPTO)
workings
Trademark (™)
Trade secrets
Protects valuable information be not disclosing it to
anyone, enforced by a contract called a NDA (Non
Disclosure Agreement)
Protects a word, phrase, symbol, soud or color

Intellectual
Property
Patents
of matter”.
Must be applied for
(USPTO)
workings
Trademark (™)
Trade secrets
Protects a word, phrase, symbol, soud or color
Protects valuable information be not disclosing it to
anyone, enforced by a contract called a NDA
What info Facebook collects, PWD cars, …

Selling your software
• Freeware - 100% free to use, not necessarily free to be modified or
distributed
• Shareware - free to download and use but asked for donations (i.e. Ad-
Block). Not free to modify or distribute
• Demo - A free trial version of the program, may not have all the features
enabled. Not free to modify or distribute
• Closed Source - the code is NOT exposed to the public and cannot be
edited or distributed (doesn’t mean free)
• Open Source - the code is exposed to the public and can be modified or
distributed, may be limits or restrictions (doesn’t mean free)
• Public Domain – There is absolutely no ownership such as copyright,
trademark, or patent. Software in the public domain can be modified,
distributed, or sold even without any attribution by anyone

Owning or licensing?
Do I own a copy of PowerPoint?
Do I own a copy of Google Chrome?
Do I own a copy of an App I built?
What is the difference between owning and licensing?
• Owning means you have every right to do what you want with the
software or code. Most people do not own software.
• Licensing is where you “buy or get permission” to use the software,
often subscription based.

Additional pointers
• What is Open Source? https://opensource.com/resources/what-
open-source
• The Open Source Initiative: https://opensource.org/
• Intellectual Property:
https://en.wikipedia.org/wiki/Intellectual_property
• Intellectual Property Theft/Piracy:
https://www.fbi.gov/investigate/white-collar-crime/piracy-ip-theft

4. Intellectual property
Now you can answer Requirements 4a, 4b and 4c!

Where is programming used?
(A: Everywhere!)

Where is
programming
used?
• Mobile devices
• Business applications
• Factory automation
• Robotics
• Internet
• Animation
• Entertainment
• Outdoor
• Engineering
• Science
• Automobiles
• Traffic control
• Information security
• Gadgets
• Medical devices
• Healthcare
• …
Can you find
examples
around you?

Additional pointers
• Examples of programs for different industries (Boys Life):
https://boyslife.org/merit-badges/programming-merit-badge/
• How to become a computer programmer? (Learn How To Become):
https://www.learnhowtobecome.org/computer-programmer/
• 9 Programming Careers for Coding Connoisseurs (Rasmussen College):
https://www.rasmussen.edu/degrees/technology/blog/programming-
careers-for-coding-connoisseurs/
• What Does a Computer Programmer Do? (The Balance Career):
https://www.thebalancecareers.com/what-does-a-computer-programmer-
do-525996
• 10 signs a career in coding and software development might be right for
you (The Guardian): https://www.theguardian.com/careers/ten-signs-
career-coding-software-development-right-for-you

6. Careers
Now you can answer Requirements 6!

What’s next?
• Check the requirements
(https://filestore.scouting.org/filestore/Merit_Badge_ReqandRes/Programming.pdf)
• Use the worksheet to track progress
(https://boyslifeorg.files.wordpress.com/2019/06/programming.pdf)
• If you need anything, tell me. I’m happy to explain, re-explain, or
debug with you!
• When you are ready, let’s discuss! The easiest is 20-30 minutes before
a Troop meeting

2020 Scout BSA Programming Merit Badge presentation

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