It’s 2016, and you have to code CODING IS THE MOST ESSENTIAL SKILL OF 21ST CENTURY 

Tracing our history q10000 BC : Hunting, Gathering, Stones q5000 BC : Metal Weapons q2000 BC : Wheels, containers q0 : Tools to cut and sort food, resources q1000 AD : Mechanical machines to control tools q1500 AD : Gears, levers, trolleys 

Our path to 2016 q1700 : Steam engine q1800 : Factories, industrial revolution q1900 : Electrical engines control mechanical engines q1950 : Electronic control of electrical engines q1980 : Computers take us to Moon q2000 : Computers help you chat, mail, watch football live q2016 : Talk to Siri, order home food, schedule laundry pickup 

Evolution of the “desktop” 

So who all need to code ? PRETTY MUCH EVERYONE 

Accountant oWrite MS Excel formulae for his/her spreadsheets oAnalyse earning/expenditure patterns oCode automatic fund transfers based on certain rules 

Business Analyst oFind patterns in data oLink sales to marketing, link demand to supply 

What does code make possible ? SOME USEFUL TASKS, SOME FUN ACTIVITIES AND SOME ESSENTIAL CHORES 

Transportation 2000 Call a cab Explain your location Bargain about fare 2016 Book cab on app Send location using GPS Auto fare based on distance and time 

Shopping 2000 Go to shop, window shop for hours Buy whatever is available No price comparison Carry it home ATM > Cash > Pay > Bill 2016 Search your product on internet Unimaginable variety Easy price comparison Home delivery Online payment 

Communication 1980 Letters, F2F Speed = x km/hr 2016 Calls, SMS, Social Media, Video Conf Speed = What ? ? ? 

Making a birthday wish 2000 Remember the birthday Make a call Say thanks to every caller 2016 Automatically send birthday message to birthday boys/girls Automatically say “Thanks” to all wishers 

. . . and the list goes on §3D Printers §Self Driving Cars §Bots on mobiles that can book tickets, order food §Augmented Reality – Pokémon GO 

How we can change the world with code ? BREAKING DOWN THE PROCESS OF PROBLEM SOLVING WITH CODE 

Problem Statement ØI want to go from Janakpuri to Shalimar Bagh ØThere are cabs available ØI don’t know cab driver ØCab driver doesn’t know me ØCab doesn’t know my location The situation at hand 

Resources ØI have a mobile phone ØCab driver has a mobile phone ØBoth mobiles have internet ØBoth mobiles have GPS What we have that we can solve the problem with 

The solution ØGive an app to the cab driver and me to use ØMake GPS location of all cabs available on internet through cab driver’s mobile ØWhen I open app, I see all cab locations ØLet user call cab via app ØWhen called, cab driver gets directions to user’s GPS location ØUser enter’s destination, cab driver gets directions to destination How to use the resources to solve the problem 

The solution ØCalculate distance travelled, time taken ØCalculate fare ØSend bill on my phone ØAllow me to pay, transfer money from my bank account to cab driver’s bank account How to use the resources to solve the problem 

The Algorithm ØFrom GPS signal, calculate latitude, longitude ØUse geometry to calculate shortest path ØFrom distance and time calculate – fare = (distance x rate) + (time x penalty) ØFind account numbers. Subtract fare from user’s account. Add fare to cabbie’s account ØIt’s all maths. (Except me travelling – which is physics) Break down a problem to mathematics, and you can solve it 

What are coding, programming and development ? CODING IS A PART OF PROGRAMMING. PROGRAMMING IS A PART OF DEVELOPMENT 

CODING •Converting problem statements into mathematics •Writing mathematical solutions of the problem •Represent mathematical solution as symbols that computer understands 

PROGRAMMING •Solve multiple simpler problems to solve larger problems •Target real world complex problems •Arrange solutions in proper sequence to follow solution procedure 

DEVELOPENT •Package the program in to a consumable form (website/app) •Make the software easy to understand and use •Distribute it to the users whose problem it is solving 

Putting it all together SOME EXAMPLE APPS AND WEBSITES, BUILT IN LESS THAN A DAY, TO SOLVE SOME REAL PROBLEMS 

Ghumo An app built in 24 hours that books cabs 

Bytes Another app made in less than 24 hours to order food at a food court 

THE THREE ESSENTIAL SKILLS OF MODERN ERA CODING WRITING SELLING