Lecture: Making the Product: Operations, Quality & Information Systems
Lecture script · about 15–20 minutes spoken · Week 6
Opening
Think about the slowest line you've stood in lately. Maybe the cashier was quick, but everyone was stuck waiting on one oven, one coffee machine, or one person who could approve a return. You've already met the main idea of this lecture. You felt it in your feet.
Whether you end up running a hospital kitchen, a bike shop, a food bank, or a coffee cart of your own, you'll need to know three things. Which step slows the work down? How does quality get built in? And how do you keep the business's information safe?
Here's where we are. In Week 1, The Idea and Its Environment, we met the coffee cart and its SWOT. In Week 2, The Market It Sells Into: Economics for Business, we placed it in its market. In Week 3, From Idea to Plan: Entrepreneurship, Small Business & the Business Plan, we built its plan and its start-up list. In Week 4, Choosing a Legal Form: Ownership, Franchising & Mergers, we chose its legal form. And in Week 5, What the Business Owes: Ethics & Social Responsibility, we asked what a business owes the people its choices touch.
Now a new part of the course begins: making the product and selling it. In this lecture we follow inputs becoming outputs, sort the ways things get made, plan the cart's opening month, find its slowest step, build quality in, and protect its information.
1. In, through, out
Let's start on an illustrative family farm at dawn. Seed, soil, water, a tractor, and a crew's hours go in. Boxes of vegetables come out, ready for a market stall. Now picture an illustrative city transit agency. Buses, drivers, fuel, and a route map go in. Rides come out. A nurse gets to a night shift, and a student gets to class.
Those two look nothing alike. But each one takes things in, works on them, and sends something more valuable out. That's the core of every business's operations.
Here's the term. Operations management is the work of planning, running, and improving the process that turns a business's inputs, such as materials, labor, and equipment, into the goods or services it sells. And the steps themselves have a name: the production process is the set of steps a business follows to turn its inputs into the goods or services it sells.
Notice what the managers watch. The farm manager watches how many boxes the crew can pack in a morning. The transit manager watches whether the buses arrive on time. Different outputs, same job: plan the process and keep making it better.
A lot of people picture operations as a factory floor with hard hats. That picture is too small. A bus route, a hospital kitchen, and a coffee cart all turn inputs into outputs.
Pause and try this. For the transit agency, name one input and the output.
Say them out loud before you go on.
Here's the answer. Buses, drivers, or fuel are inputs, and the rides are the output, because rides are what the agency delivers to its riders.
So when you look at any business, ask three questions: what goes in, what happens to it, and what comes out?
2. Same, same with choices, or one of a kind
Now picture an illustrative neighborhood bakery. Before sunrise, a mixer and an oven turn out tray after tray of the same sandwich loaf. Later, a customer orders a birthday cake: the bakery's standard sponge, with the buyer's choice of flavor and a message on top. And once in a while, a couple orders a wedding cake designed from scratch.
One small bakery, three kinds of making. They differ in how much each item is made the same way.
Mass production is making large numbers of identical items the same way every time, so that each one costs less to make. That's the loaves. Mass customization is making items from standard parts and steps while letting each buyer choose some features, so many buyers get a personalized item at close to the cost of mass production. That's the birthday cakes. Customization is making each item from scratch to one buyer's own wishes, one at a time. That's the wedding cake.
There's a second way to sort the work: does the process keep running, or does it stop and reset? A continuous process is a production process that runs for long stretches without stopping, making the same output the whole time. The bread line is continuous. An intermittent process is a production process that stops and resets to make different outputs, in short runs or one order at a time. The cake bench is intermittent.
Pause and try this. Is the birthday cake mass customization or customization?
Ask yourself where each cake starts.
Here's the answer. It's mass customization, because every birthday cake starts from the same standard sponge and the buyer only chooses among options.
Only true customization starts over for each buyer.
3. Plan the bars, then watch the bars
Picture the cart's owner with a calendar and a list. Where should the cart park? Who brings the beans? When does the helper get trained? Planning the operation comes before running it.
First, where. A location decision is the choice of where a business makes or delivers its product, weighing nearness to customers, suppliers, and workers against what each place costs. The cart has an unusual edge here. Its SWOT listed a strength: it can move to where the customers are, like the office building two blocks away or the weekend farmers' market. A shop makes its location decision once. The cart can make it every morning.
Next, having things ready. Resource planning is planning the inventory, the suppliers, and the schedule a business needs, so that materials, people, and equipment are ready when the work calls for them. Inventory is the materials and goods a business keeps on hand to make or sell its product. For the cart, that's beans, milk, cups, and lids, and the start-up list set aside 2,000 dollars for it.
Then, the schedule. A Gantt chart is a scheduling chart that shows each task of a project as a horizontal bar against a timeline, so you can see when each task starts and ends and which tasks overlap. Let me describe the cart's chart in words. Time runs left to right across the opening month. Securing the permit comes first, because nothing opens without it. Ordering beans and cups and training the helper run side by side in the middle. Testing the menu starts after both of those end. Opening sits at the far right.
And because plans slip, there's one more tool. Production control is tracking the work against its plan and schedule, and correcting course when something slips.
Pause and try this. If the bean order runs late, which later tasks slide too?
Follow the bars from left to right.
Here's the answer. Testing the menu slides, and so does opening, because testing can't start until the beans arrive.
That's why a schedule is never made once and filed. You keep checking it.
4. The slowest step sets the pace
Now let's watch the cart work. A customer walks up, orders, pays, and steps aside. Behind the counter, the drink gets made on the cart's one espresso machine. Then the next drink starts.
To see how many people the cart can serve, you lay out every step. A process map is a step-by-step list or drawing of how a product or service moves from start to finish, with the time each step takes. The cart's map has two steps. The counter, taking the order and payment, takes 1 minute per drink. Drink preparation takes 2 minutes per drink on the one machine.
Here are the two terms that make sense of it. A bottleneck is the slowest step in a process, the one that limits how much the whole process can produce. Capacity is the most output a process can produce in a given time, set by its slowest step.
So which step is the bottleneck? Drink preparation, at 2 minutes. An hour has 60 minutes, and the machine finishes one drink every 2 minutes. Divide 60 by 2, and the cart's capacity is 30 drinks an hour. Over a four-hour morning rush, 30 times 4 gives 120 drinks.
Here's the part that surprises people. The counter could handle 60 customers an hour on its own. It doesn't matter. Every drink still waits its turn at the machine.
Now add a second machine and a second person. Preparation runs at an effective 1 minute per drink. Both steps now take 1 minute, so the counter becomes the limit: 60 divided by 1 is 60 drinks an hour. That's 60 versus 30, twice as many.
Pause and try this. With one machine, suppose the counter got faster. What happens to capacity?
Think about where the drinks wait.
Here's the answer. Capacity stays at 30 drinks an hour, because the machine, not the counter, is still the slowest step.
So the next equipment dollar belongs at the bottleneck. One caveat: this map is a model. Real mornings have slow orders and sudden crowds, so capacity is a ceiling, not a promise.
5. Build it in, don't inspect it in
Picture an illustrative hospital kitchen sending trays up to the people staying in its wards. Now and then, a tray goes out with the wrong item. Across town, an illustrative bike shop keeps seeing the same bikes come back for the same repair. Checking harder at the door won't fix either one. The fix is inside the process.
Five approaches are widely taught. Total quality management is a quality approach in which everyone in a firm works to improve every process continuously, instead of leaving quality to an inspection at the end. Six Sigma is a quality program, introduced at Motorola in 1986, that aims for no more than 3.4 defects per 1,000,000 opportunities and works through five steps: define, measure, analyze, improve, and control. Lean production is running a process by removing every step that adds no value for the customer. JIT inventory is an inventory approach in which materials arrive as they are needed, so a business keeps a small, steady stock instead of a large pile. And ISO 9000 is a family of international standards for quality management that a firm can follow to show it runs a working quality system.
Watch the kitchen walk the Six Sigma steps. It defines the problem: a wrong item on a tray. It measures: it counts the wrong trays each week. It analyzes: most errors happen at the shift change. It improves: two cooks read a short checklist together at the hand-off. And it controls: it keeps counting to see whether the fix holds.
The bike shop does it another way. Every mechanic logs the repairs that come back, which is total quality management. The log shows that brake adjustments return most. So the shop writes one standard way to do the job and drops a test ride that added time but caught nothing. That's lean.
Pause and try this. The cart gets milk delivered as it's needed but keeps a small stock for the morning. Does that small stock break the JIT idea?
Think about what JIT promises.
Here's the answer. No, because JIT means a small, steady stock timed to need, not zero stock.
A cart with no milk at all can't sell a latte.
6. Spot it, lock it, update it, back it up
Picture an illustrative community food bank. Its coordinator keeps an online volunteer sign-up sheet, a list of the families it serves, and its donation records. One morning a message arrives. It looks like it's from the donation website, and it asks the coordinator to sign in again to keep the account active.
That message is a test. Here's why it matters. An information system is the people, devices, software, and records a business uses to collect, store, and use its data, such as sales, customers, suppliers, and payroll. Cybersecurity is protecting a business's devices, accounts, and data from theft, damage, and access by people who should not have it.
The food bank's message is phishing: a message that tricks someone into opening a harmful attachment or link, or into handing over a password. Other common threats include malicious software, which is software built to harm a device or to steal from it, such as viruses, worms, and ransomware. Ransomware is malicious software that locks a business's files or devices and demands a payment to unlock them. Then there's unauthorized access to accounts, and lost or stolen devices.
The protections are habits. Recognize and report phishing. Use strong passwords with a password manager, an app that creates and stores a strong, different password for each account. Turn on multifactor authentication, a sign-in that asks for a second proof of identity besides the password, such as a code sent to a phone. Keep software updated. And keep a backup, a copy of a business's data kept in a separate place, so it can be restored if the original is lost, locked, or damaged.
Pause and try this. Ransomware locks the food bank's family list the night before a distribution. Which habit saves the day?
Match the threat to the habit.
Here's the answer. A recent backup kept in a separate place, because the food bank can restore the list and keep serving.
Notice that none of these habits needs an IT department. The helper who spots a fake message is doing cybersecurity.
Closing
Let me pull it together in the order we built it. Operations management turns inputs into outputs, for a bus ride as much as a loaf of bread. Mass production repeats one item, mass customization adds choices to a standard base, and customization starts over; a process either keeps running or stops and resets. The cart plans its location, its inventory, and a Gantt chart, and production control keeps the work on plan. The bottleneck is the slowest step: with one machine the cart makes at most 30 drinks an hour, 120 in a four-hour rush, and a second machine lifts that to 60. Quality gets built into the process through total quality management, Six Sigma, lean production, and JIT inventory, with ISO 9000 as the standards family. And a small business protects its data with habits everyone shares.
Next in this module come the slide deck, the Readings and Resources page, the lecture tutorial, the practice set, and the quiz. Then, in Week 7, Who Buys and at What Price: Marketing, Products & Pricing, we price the cart's drinks and find how many it must sell to break even.
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